/* DEAD//AIR landing page (/deadair/). Ported 2026-11-01 from Rick's design artifact.
   Layout: a transmission log. One full-bleed signal band up top (the app's session
   screen), then a single 1040px column of quiet panels. Mono for everything the
   instrument says, sans for what we say about it, one serif line for the Codex. */
:root {
  color-scheme: dark;
  --night: #0a0b0a;          /* app Theme.night */
  --panel: #151614;          /* app Theme.panel */
  --bone: #e8e2d0;           /* app Theme.bone */
  --dim: #a7a296;            /* bone at 64% on night, 7.4:1 */
  --faint: #3a3a35;          /* bone at 22%: hairlines */
  --signal: #9dff7a;         /* app Theme.signal, phosphor */
  --signal-dim: #6fbf55;
  --signal-glow: rgba(157, 255, 122, 0.16);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}
* { box-sizing: border-box; }
html { scroll-padding-top: env(safe-area-inset-top, 0px); }
body {
  margin: 0;
  background: var(--night);
  color: var(--bone);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 1px solid var(--signal); outline-offset: 3px; }
.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.mono { font-family: var(--mono); }
.label {
  font: 600 11px/1.4 var(--mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0;
}
.label.sig { color: var(--signal); }

/* ---- header ---- */
.top {
  position: relative;
  z-index: 3;
  border-bottom: 1px solid var(--faint);
  background: rgba(10, 11, 10, 0.86);
}
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; padding-block: 14px; }
.brand { font: 600 12px/1 var(--mono); letter-spacing: 0.18em; display: flex; gap: 10px; align-items: center; }
.brand a { text-decoration: none; color: var(--dim); }
.brand a:hover { color: var(--bone); }
.brand .sep { color: var(--faint); }
.brand .name { color: var(--bone); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px 20px; font: 600 11px/1 var(--mono); letter-spacing: 0.2em; }
.tabs a { text-decoration: none; color: var(--dim); padding-block: 6px; border-bottom: 1px solid transparent; }
.tabs a:hover { color: var(--bone); border-bottom-color: var(--faint); }
.tabs a[aria-current] { color: var(--signal); }

/* ---- hero: the signal band ---- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--faint); }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero::after {
  /* keep the left column readable over the field */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(10,11,10,0.92) 0%, rgba(10,11,10,0.72) 46%, rgba(10,11,10,0.25) 100%);
}
.hero .wrap {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 40px; align-items: end;
  padding-block: 84px 72px;
}
.hero-copy { min-width: 0; }
.wordmark {
  margin: 18px 0 6px;
  font: 800 clamp(56px, 10.5vw, 112px)/0.9 var(--mono);
  letter-spacing: -0.04em;
  color: var(--bone);
  text-shadow: 0 0 28px rgba(232, 226, 208, 0.08);
}
.wordmark .slash { color: var(--signal); text-shadow: 0 0 22px var(--signal-glow); }
.tagline { margin: 0 0 24px; font: 400 clamp(20px, 2.6vw, 26px)/1.3 var(--mono); color: var(--signal); letter-spacing: 0.01em; }
.lede { margin: 0 0 30px; max-width: 46ch; font-size: 18px; line-height: 1.6; color: var(--bone); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 52px; padding: 0 22px;
  font: 700 13px/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; border-radius: 6px;
  border: 1px solid var(--faint); background: var(--panel); color: var(--bone);
}
.btn:hover { border-color: var(--dim); }
.btn.hot { background: var(--signal); border-color: var(--signal); color: var(--night); box-shadow: 0 0 22px var(--signal-glow); }
.btn.hot:hover { background: #b5ff98; }
.meta { margin: 22px 0 0; font: 500 11px/1.8 var(--mono); letter-spacing: 0.16em; color: var(--dim); }

/* the transcript the hero replays */
.feed {
  min-width: 0;
  background: rgba(21, 22, 20, 0.82);
  border: 1px solid var(--faint);
  border-radius: 6px;
  backdrop-filter: blur(2px);
}
.feed-head { display: flex; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--faint); }
.feed-head .label { letter-spacing: 0.18em; }
.feed ol { list-style: none; margin: 0; padding: 10px 16px 14px; height: 252px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; gap: 4px; }
.feed li { display: grid; grid-template-columns: 5.2em minmax(0, 1fr) auto; gap: 10px; align-items: baseline; font: 400 15px/1.5 var(--mono); }
.feed li .t { color: var(--dim); font-size: 12px; font-variant-numeric: tabular-nums; }
.feed li .x { color: var(--signal); font-size: 12px; }
.feed li.new { animation: surface 900ms ease-out both; }
.feed li.old { color: var(--dim); }
@keyframes surface { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.feed-foot { margin: 0; padding: 10px 16px 12px; border-top: 1px solid var(--faint); font: 400 12px/1.5 var(--sans); color: var(--dim); }

/* ---- sections ---- */
section.band { padding-block: 88px; border-bottom: 1px solid var(--faint); }
.head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 64ch; }
.head.flush { margin-bottom: 0; }
h2 {
  margin: 0;
  font: 700 clamp(28px, 3.6vw, 38px)/1.12 var(--mono);
  letter-spacing: -0.02em;
  color: var(--bone);
  text-wrap: balance;
}
.head p.body { margin: 0; color: var(--dim); font-size: 17px; }
p.body { max-width: 64ch; }

/* stats strip: the three numbers the whole app rests on */
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--faint); border-radius: 6px; margin-bottom: 40px; }
.stat { padding: 22px 22px 20px; display: grid; gap: 8px; align-content: start; }
.stat + .stat { border-left: 1px solid var(--faint); }
.stat .n { font: 700 clamp(30px, 4vw, 42px)/1 var(--mono); color: var(--signal); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.stat .d { margin: 0; color: var(--dim); font-size: 14px; line-height: 1.5; }
.src { font: 400 12px/1.5 var(--mono); color: var(--dim); }
.src a { color: var(--dim); text-underline-offset: 3px; }
.src a:hover { color: var(--bone); }

/* the residue ledger */
.ledger-wrap { overflow-x: auto; border: 1px solid var(--faint); border-radius: 6px; background: var(--panel); }
table.ledger { width: 100%; border-collapse: collapse; font: 400 15px/1.45 var(--mono); }
.ledger th { text-align: left; font: 600 11px/1.4 var(--mono); letter-spacing: 0.18em; color: var(--dim); padding: 14px 18px; border-bottom: 1px solid var(--faint); white-space: nowrap; }
.ledger td { padding: 11px 18px; border-bottom: 1px solid rgba(58, 58, 53, 0.6); vertical-align: baseline; }
.ledger tr:last-child td { border-bottom: 0; }
.ledger td.num { text-align: right; font-variant-numeric: tabular-nums; color: var(--dim); white-space: nowrap; }
.ledger th.num { text-align: right; }
.ledger td.k { white-space: nowrap; font-size: 12px; letter-spacing: 0.1em; }
.ledger .res { color: var(--signal); }
.ledger .fresh { color: var(--dim); }
.legend { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 14px; font: 400 12px/1.5 var(--mono); color: var(--dim); }

/* session steps: a real sequence, so they are numbered */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--faint); }
.steps li { padding: 22px 18px 0 0; display: grid; gap: 10px; align-content: start; min-width: 0; }
.steps li + li { padding-left: 18px; border-left: 1px solid var(--faint); }
.steps .num { font: 500 12px/1 var(--mono); color: var(--dim); font-variant-numeric: tabular-nums; }
.steps .verb { font: 800 20px/1 var(--mono); letter-spacing: 0.08em; color: var(--bone); }
.steps p { margin: 0; font-size: 15px; line-height: 1.55; color: var(--dim); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: 600 10px/1 var(--mono); letter-spacing: 0.14em; padding: 6px 7px; border: 1px solid var(--faint); border-radius: 3px; color: var(--bone); }
.chip.mic { border-color: var(--signal-dim); color: var(--signal); }

/* the veil */
.veil { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 40px; align-items: start; }
.dial { background: var(--panel); border: 1px solid var(--faint); border-radius: 6px; padding: 24px 22px 22px; display: grid; gap: 18px; }
.dial-ends { display: flex; justify-content: space-between; font: 700 12px/1 var(--mono); letter-spacing: 0.22em; color: var(--dim); }
.dial-value { font: 700 13px/1 var(--mono); color: var(--signal); letter-spacing: 0.14em; text-align: center; font-variant-numeric: tabular-nums; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 36px; background: transparent; margin: 0; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 2px; background: linear-gradient(90deg, var(--faint), var(--signal-dim)); }
input[type=range]::-moz-range-track { height: 2px; background: linear-gradient(90deg, var(--faint), var(--signal-dim)); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -10px; border-radius: 50%; background: var(--night); border: 2px solid var(--signal); box-shadow: 0 0 14px var(--signal-glow); }
input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--night); border: 2px solid var(--signal); }
.knots { display: flex; justify-content: space-between; font: 400 10px/1 var(--mono); color: var(--dim); margin-top: -10px; padding-inline: 4px; }
dl.params { margin: 0; display: grid; grid-template-columns: auto auto; gap: 0; border-top: 1px solid var(--faint); }
dl.params dt, dl.params dd { margin: 0; padding: 10px 0; border-bottom: 1px solid rgba(58, 58, 53, 0.6); font: 400 13px/1.4 var(--mono); }
dl.params dt { color: var(--dim); letter-spacing: 0.04em; }
dl.params dd { text-align: right; color: var(--bone); font-variant-numeric: tabular-nums; }
dl.params dd.on { color: var(--signal); }
.sample { border: 1px dashed var(--faint); border-radius: 4px; padding: 12px 14px; display: grid; gap: 6px; }
.sample .out { font: 400 16px/1.4 var(--mono); color: var(--bone); }
.sample .why { font-size: 13px; color: var(--dim); line-height: 1.5; }

/* ask */
.ask { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.q { font: 400 clamp(22px, 2.8vw, 28px)/1.3 var(--mono); color: var(--bone); margin: 0 0 6px; }
.q::before { content: "ASK › "; color: var(--signal); font-size: 0.6em; letter-spacing: 0.16em; vertical-align: 0.25em; }
.bars { display: grid; gap: 12px; margin: 22px 0 14px; }
.bar { display: grid; grid-template-columns: 7.5em minmax(0, 1fr) 3.4em; gap: 12px; align-items: center; font: 400 14px/1 var(--mono); }
.bar .w { color: var(--bone); }
.bar .track { height: 14px; background: rgba(58, 58, 53, 0.45); border-radius: 2px; overflow: hidden; }
.bar .fill { display: block; height: 100%; background: var(--signal); border-radius: 2px; }
.bar.other .fill { background: var(--faint); }
.bar.other .w { color: var(--dim); }
.bar .c { text-align: right; color: var(--dim); font-variant-numeric: tabular-nums; }
.ask-note { color: var(--dim); font-size: 15px; margin: 0; }

/* codex */
.codex { padding-block: 112px; border-bottom: 1px solid var(--faint); background: radial-gradient(ellipse at 50% 0%, rgba(157,255,122,0.05), transparent 60%), var(--night); }
.codex h2.label { text-align: center; margin-bottom: 26px; font-size: 11px; }
.codex blockquote { margin: 0 auto; max-width: 30ch; text-align: center; }
.codex blockquote p { margin: 0 0 26px; font: italic 400 clamp(24px, 3.4vw, 34px)/1.35 var(--serif); color: var(--bone); text-wrap: balance; }
.codex blockquote p.label { font: 600 11px/1.4 var(--mono); font-style: normal; color: var(--dim); }
.codex .label { text-align: center; }

/* honest by design */
.rules { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.rules ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--faint); }
.rules li { display: grid; grid-template-columns: 11.5em minmax(0, 1fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--faint); }
.rules li .k { font: 700 12px/1.6 var(--mono); letter-spacing: 0.14em; color: var(--bone); }
.rules li span:last-child { color: var(--dim); font-size: 15px; line-height: 1.6; }
.phone {
  justify-self: center; width: 100%; max-width: 260px; aspect-ratio: 9 / 16;
  border: 3px solid var(--signal); border-radius: 26px; background: var(--night);
  box-shadow: 0 0 30px var(--signal-glow), inset 0 0 0 6px var(--night);
  display: grid; grid-template-rows: auto 1fr auto; padding: 22px 16px 18px; gap: 12px;
  margin-inline: auto;
}
.phone .mic { font: 700 10px/1 var(--mono); letter-spacing: 0.14em; color: var(--signal); text-align: center; }
.phone .ln { font: 400 12px/1.6 var(--mono); color: var(--dim); align-self: end; display: grid; gap: 2px; }
.phone .ln b { color: var(--bone); font-weight: 400; }
.phone .hold { font: 800 13px/1 var(--mono); letter-spacing: 0.18em; text-align: center; padding: 14px 0; border-radius: 10px; background: var(--signal); color: var(--night); }
.phone-cap { margin: 12px 0 0; text-align: center; font: 400 12px/1.5 var(--mono); color: var(--dim); }

/* free / unlock */
.tiers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.tier { border: 1px solid var(--faint); border-radius: 6px; padding: 24px; display: grid; gap: 14px; align-content: start; background: var(--panel); }
.tier.unlock { border-color: var(--signal-dim); }
.tier h3 { margin: 0; font: 800 18px/1 var(--mono); letter-spacing: 0.12em; }
.tier.unlock h3 { color: var(--signal); }
.tier ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.tier li { color: var(--dim); font-size: 15px; padding-left: 18px; position: relative; }
.tier li::before { content: "·"; position: absolute; left: 4px; color: var(--signal); }
.tier .note { margin: 0; font: 400 12px/1.5 var(--mono); color: var(--dim); }

/* close */
.close { padding-block: 96px 88px; text-align: center; }
.close h2 { margin-bottom: 10px; }
.close .cta-row { justify-content: center; margin-top: 28px; }
.close .fine { margin: 30px auto 0; max-width: 60ch; font-size: 13px; color: var(--dim); }

footer { border-top: 1px solid var(--faint); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; padding-block: 22px 26px; font: 500 11px/1.6 var(--mono); letter-spacing: 0.16em; color: var(--dim); padding-bottom: max(26px, env(safe-area-inset-bottom, 0px)); }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer a { text-decoration: none; color: var(--dim); }
footer a:hover { color: var(--bone); }

@media (max-width: 880px) {
  .hero .wrap, .veil, .ask, .rules { grid-template-columns: minmax(0, 1fr); }
  .hero::after { background: linear-gradient(180deg, rgba(10,11,10,0.86) 0%, rgba(10,11,10,0.74) 100%); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .steps li, .steps li + li { padding: 18px 0; border-left: 0; border-bottom: 1px solid var(--faint); }
  .tiers { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
  .hero .wrap { padding-block: 56px 48px; }
  section.band { padding-block: 64px; }
  .stats { grid-template-columns: minmax(0, 1fr); }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--faint); }
  .rules li { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .feed li { grid-template-columns: 4.4em minmax(0, 1fr) auto; font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .feed li.new { animation: none; }
}