@font-face {
  font-family: "Space Grotesk";
  src: url("/fonts/space-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark;

  --color-background: #080a09;
  --color-surface: #101310;
  --color-text: #f1f4ee;
  --color-muted: #848c84;
  --color-signal: #a5ff4f;
  --color-warning: #ffc857;
  --color-contradiction: #ff5d5d;
  --color-evidence: #62b6ff;
  --color-hairline: rgb(241 244 238 / 0.14);

  --font-display: "Space Grotesk", "Arial Narrow", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --content-width: 75rem;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  /* Side padding that keeps content within --content-width on wide screens. The percentage
     resolves where the variable is used, so this only works on full-width blocks. */
  --page-inline: max(var(--gutter), calc((100% - var(--content-width)) / 2));
  --section-gap: clamp(4.5rem, 11vw, 8.5rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  line-height: 1.55;
  text-wrap: pretty;
}

[hidden] {
  display: none !important;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-signal);
  outline-offset: 3px;
}

h1 {
  font-size: clamp(2.6rem, 13vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.88;
  text-transform: uppercase;
}

h2 {
  max-width: 20ch;
  font-size: clamp(1.9rem, 5.2vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
  text-transform: uppercase;
  text-wrap: balance;
}

.signal {
  color: var(--color-signal);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Shared monospace label treatment. */
.eyebrow,
.section__label,
.field-label,
.tag,
.site-nav a,
.skip-link,
.pairs li,
.method__name,
.receipt__stamp,
.receipt__kicker,
.receipt__verdict dt,
.evidence h3,
.tagline,
.copyright {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

/* The brand slash is drawn rather than typed: the logo's slash is a solid parallelogram at
   cap height, which no "/" glyph matches. 0.7em is Space Grotesk's cap height. */
.slash {
  display: inline-block;
  width: 0.21em;
  height: 0.7em;
  margin-inline: 0.2em 0.14em;
  background: var(--color-signal);
  transform: skewX(-23deg);
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: -100rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  background: var(--color-signal);
  color: var(--color-background);
  text-decoration: none;
}

.skip-link:focus {
  left: var(--gutter);
}

.button {
  display: inline-block;
  padding: 0.95rem 1.5rem;
  border: 1px solid var(--color-signal);
  border-radius: 0;
  background: var(--color-signal);
  color: var(--color-background);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color 120ms ease,
    color 120ms ease;
}

.button:hover {
  background: transparent;
  color: var(--color-signal);
}

.button[aria-disabled="true"] {
  border-color: var(--color-muted);
  background: transparent;
  color: var(--color-muted);
  cursor: progress;
}

.button--small {
  padding: 0.6rem 1rem;
  font-size: 0.75rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem var(--page-inline);
  border-bottom: 1px solid var(--color-hairline);
  background: var(--color-background);
}

.mark {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 120ms ease;
}

.site-nav a:hover {
  color: var(--color-text);
}

/* Hero */

.hero {
  padding: clamp(3.5rem, 9vw, 7rem) var(--page-inline) var(--section-gap);
}

.eyebrow {
  margin-bottom: 1.75rem;
  color: var(--color-muted);
}

.hero__line {
  display: block;
}

.lede {
  max-width: 38rem;
  margin-top: 2.25rem;
  font-size: clamp(1.125rem, 1.9vw, 1.375rem);
  line-height: 1.45;
}

/* Waitlist */

.waitlist {
  max-width: 36rem;
  margin-top: 2.75rem;
}

.field-label {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--color-muted);
}

.waitlist__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.waitlist__row input {
  flex: 1 1 14rem;
  min-width: 0;
  padding: 0.95rem 1rem;
  border: 1px solid var(--color-hairline);
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-mono);
  /* 16px or larger stops iOS Safari from zooming the page when the field is focused. */
  font-size: 1rem;
}

.waitlist__row input::placeholder {
  color: var(--color-muted);
  opacity: 1;
}

.waitlist__row input:focus-visible {
  border-color: var(--color-signal);
  outline-offset: 0;
}

.waitlist__row input[aria-invalid="true"] {
  border-color: var(--color-contradiction);
}

.waitlist__row .button {
  flex: 0 0 auto;
}

/* Honeypot: off-screen instead of display:none, because bots skip fields that are not rendered. */
.waitlist__trap {
  position: absolute;
  left: -100rem;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.waitlist__note {
  margin-top: 0.85rem;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.waitlist__status {
  min-height: 1.5em;
  margin-top: 0.85rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

.waitlist__status[data-state="success"] {
  color: var(--color-signal);
}

.waitlist__status[data-state="invalid"],
.waitlist__status[data-state="failure"] {
  color: var(--color-contradiction);
}

/* Sections */

.section {
  padding: var(--section-gap) var(--page-inline);
  border-top: 1px solid var(--color-hairline);
}

.section__label {
  margin-bottom: 1.5rem;
  color: var(--color-muted);
}

.section__body {
  max-width: 40rem;
  margin-top: 1.75rem;
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
}

.pairs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  margin-top: 3rem;
  border-top: 1px solid var(--color-hairline);
}

.pairs li {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-hairline);
  font-size: 0.875rem;
}

/* Method */

.method {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.method__step {
  padding-top: 1.1rem;
  border-top: 3px solid var(--step-color);
}

.method__step--fact {
  --step-color: var(--color-evidence);
}

.method__step--inference {
  --step-color: var(--color-text);
}

.method__step--opinion {
  --step-color: var(--color-muted);
}

.method__step--uncertainty {
  --step-color: var(--color-warning);
}

.method__name {
  margin-bottom: 0.6rem;
  color: var(--step-color);
}

.aside {
  margin-top: 3rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

/* Sample receipt */

.receipt {
  margin-top: 3rem;
  padding: clamp(1.25rem, 4vw, 2.75rem);
  border: 1px solid var(--color-hairline);
  background: var(--color-surface);
}

.receipt__stamp {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border: 1px dashed var(--color-warning);
  color: var(--color-warning);
  font-size: 0.75rem;
}

.receipt__kicker {
  margin-top: 2rem;
  color: var(--color-muted);
}

.receipt__claim {
  margin-top: 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.receipt__verdict {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin-top: 1.75rem;
}

.receipt__verdict dt {
  color: var(--color-muted);
}

.receipt__verdict dd {
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 500;
  text-transform: uppercase;
}

.receipt__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem 3rem;
  margin-top: 2.5rem;
}

.evidence {
  padding-top: 1rem;
  border-top: 1px solid var(--color-hairline);
}

.evidence--for {
  --evidence-color: var(--color-signal);
}

.evidence--against {
  --evidence-color: var(--color-contradiction);
}

.evidence--unknown {
  --evidence-color: var(--color-warning);
}

.evidence--sources {
  --evidence-color: var(--color-evidence);
}

.evidence h3 {
  margin-bottom: 0.75rem;
  color: var(--evidence-color);
}

.evidence li {
  position: relative;
  padding-left: 1.25rem;
  overflow-wrap: anywhere;
}

.evidence li + li {
  margin-top: 0.5rem;
}

.evidence li::before {
  content: "/";
  position: absolute;
  left: 0;
  color: var(--evidence-color);
  font-family: var(--font-mono);
}

.evidence--sources li {
  color: var(--color-evidence);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

/* Roadmap */

.tag {
  display: inline-block;
  margin-top: 1.75rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--color-hairline);
  color: var(--color-muted);
  font-size: 0.75rem;
}

.roadmap {
  margin-top: 2.5rem;
  border-top: 1px solid var(--color-hairline);
}

.roadmap li {
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
  gap: 0.4rem 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--color-hairline);
}

.roadmap h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-transform: uppercase;
}

.roadmap p {
  color: var(--color-muted);
}

/* Disclaimer */

.fine-print p:not(.section__label) {
  max-width: 44rem;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.fine-print p + p {
  margin-top: 1rem;
}

.fine-print a {
  color: var(--color-evidence);
}

/* Footer */

.site-footer {
  padding: var(--section-gap) var(--page-inline) 3rem;
  border-top: 1px solid var(--color-hairline);
}

.creed {
  font-size: clamp(2.2rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-transform: uppercase;
}

.creed .signal {
  display: block;
}

.site-footer__brand {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-top: clamp(4rem, 10vw, 7rem);
}

.lockup {
  font-size: clamp(2.75rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.88;
  text-transform: uppercase;
}

.lockup__word,
.lockup__domain {
  display: block;
}

.lockup__domain {
  margin-top: 0.9em;
  font-family: var(--font-mono);
  font-size: 0.3em;
  font-weight: 400;
  letter-spacing: 0.32em;
  line-height: 1;
}

.site-footer__meta {
  color: var(--color-muted);
  text-align: right;
}

.copyright {
  margin-top: 0.6rem;
}

/* Not-found page */

.not-found {
  display: grid;
  align-content: center;
  justify-items: start;
  min-height: 100vh;
  padding: var(--gutter);
}

.not-found .mark {
  margin-bottom: 3rem;
}

.not-found .button {
  margin-top: 2rem;
}

@media (max-width: 40rem) {
  .site-nav {
    display: none;
  }

  .waitlist__row .button {
    flex: 1 0 100%;
  }

  .receipt__grid,
  .roadmap li {
    grid-template-columns: 1fr;
  }

  .site-footer__meta {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}