/* Alternate design: artifact-first datasheet.
   Deliberately shares no variables with styles.css so the two can be compared
   without one bleeding into the other. */

:root {
  --bg: #ffffff;
  --ink: #0a0b0d;
  --ink-2: #40454f;
  --ink-3: #767d89;
  --ink-4: #a3a9b4;
  --line: #e6e8ec;
  --line-2: #c8ccd4;
  --accent: #1b4dff;
  --accent-wash: #f0f3ff;
  --wash: #f7f8fa;
  --ok: #0f7b3d;
  --warn: #b45309;
  --sans: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --wrap: 1180px;
}

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

/* Class-based display rules outrank the UA sheet, so hidden needs to win. */
[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

p {
  margin: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: #fff;
}

[id] {
  scroll-margin-top: 76px;
}

/* Eyebrows and labels */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
}

/* Header */

.bar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.bar__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 60px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.logo b {
  width: 9px;
  height: 9px;
  margin-right: 0.35rem;
  background: var(--accent);
}

.bar nav {
  display: none;
  gap: 1.6rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

.bar nav a {
  color: var(--ink-3);
}

.bar nav a:hover {
  color: var(--ink);
  text-decoration: none;
}

@media (min-width: 900px) {
  .bar nav {
    display: flex;
  }
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.05rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}

.btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  text-decoration: none;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--ink);
}

.btn--ghost:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.btn--lg {
  padding: 0.8rem 1.4rem;
  font-size: 0.84rem;
}

.btn--block {
  width: 100%;
}

/* Hero */

.hero {
  padding: 3.5rem 0 0;
}

.hero__grid {
  display: grid;
  gap: 2.75rem;
  align-items: start;
}

@media (min-width: 940px) {
  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    padding-bottom: 1rem;
  }
}

.hero h1 {
  margin: 1rem 0 0;
  font-size: clamp(2.4rem, 5.2vw, 3.6rem);
}

.hero__sub {
  margin-top: 1.1rem;
  max-width: 34ch;
  font-size: 1.05rem;
  color: var(--ink-2);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.75rem;
}

.hero__fine {
  margin-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-4);
}

/* Receipt artifact */

.receipt {
  border: 1px solid var(--ink);
  background: #fff;
  box-shadow: 10px 10px 0 var(--accent-wash);
}

.receipt__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.receipt__id {
  color: var(--ink-4);
  letter-spacing: 0.06em;
}

.rows {
  margin: 0;
  padding: 0.35rem 0;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.rows > div {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.75rem;
  padding: 0.42rem 1rem;
}

.rows dt {
  color: var(--ink-4);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.7;
}

.rows dd {
  margin: 0;
  color: var(--ink);
}

.rows__split {
  border-top: 1px dashed var(--line-2);
  margin-top: 0.35rem;
  padding-top: 0.35rem;
}

.redact {
  display: inline-block;
  width: 4.5rem;
  height: 0.78rem;
  margin-right: 0.4rem;
  background: var(--ink);
  vertical-align: -1px;
}

.muted {
  color: var(--ink-3);
}

.tick {
  color: var(--ok);
}

.receipt__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.paid {
  padding: 0.3rem 0.6rem;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
}

.sample {
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

/* Constraint strip */

.strip {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--wash);
}

.strip__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0 2rem;
  padding: 0.85rem 0;
  font-family: var(--mono);
  font-size: 0.73rem;
  color: var(--ink-3);
}

.strip__row span b {
  font-weight: 500;
  color: var(--ink);
}

/* Sections */

.sec {
  padding: 4rem 0;
  border-bottom: 1px solid var(--line);
}

.sec__head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.sec h2 {
  margin-top: 0.7rem;
  font-size: clamp(1.6rem, 3.2vw, 2.15rem);
}

.sec__head p {
  margin-top: 0.85rem;
  max-width: 58ch;
}

/* Two-column capture comparison */

.cols {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 820px) {
  .cols {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .cols > *:first-child {
    border-right: none;
  }
}

.col {
  border: 1px solid var(--line-2);
  padding: 1.25rem;
}

.col__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding-bottom: 0.85rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

.dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
}

.dot--off {
  background: var(--ink-4);
}

.list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.list li {
  padding: 0.4rem 0;
  border-bottom: 1px dotted var(--line);
  color: var(--ink-2);
}

.list li:last-child {
  border-bottom: none;
}

/* Steps with commands */

.steps {
  display: grid;
  gap: 1rem;
  counter-reset: step;
}

.step {
  display: grid;
  gap: 0.75rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--line-2);
}

@media (min-width: 760px) {
  .step {
    grid-template-columns: 13rem 1fr;
    align-items: center;
    gap: 1.5rem;
  }
}

.step__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.step__label::before {
  counter-increment: step;
  content: counter(step) " / ";
  color: var(--accent);
}

.step p {
  font-size: 0.9rem;
  color: var(--ink-3);
}

.term {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.8rem;
  background: var(--ink);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.8rem;
  overflow-x: auto;
}

.term code {
  white-space: nowrap;
}

.term code em {
  color: #8fa6ff;
  font-style: normal;
}

.copy {
  flex: none;
  padding: 0.2rem 0.45rem;
  border: 1px solid #3a3f4a;
  background: transparent;
  color: #a3a9b4;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.copy:hover {
  border-color: #fff;
  color: #fff;
}

/* Spec grid */

.spec__title {
  margin-top: 2.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--ink);
}

.spec {
  display: grid;
  gap: 0;
  margin: 0;
}

@media (min-width: 700px) {
  .spec {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.spec > div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 700px) {
  .spec > div {
    padding: 0.85rem 1rem 0.85rem 0;
  }
}

.spec dt {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.spec dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink);
}

/* Tier table */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th,
.table td {
  padding: 0.8rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.table thead th {
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.table tbody th {
  width: 8rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink);
}

.table td {
  color: var(--ink-2);
}

.table caption {
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-align: left;
  color: var(--ink-4);
}

.callout {
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-wash);
  font-size: 0.92rem;
  color: var(--ink-2);
}

.callout b {
  color: var(--ink);
}

.footnote {
  margin-top: 1.25rem;
  max-width: 68ch;
  font-size: 0.84rem;
  color: var(--ink-3);
}

/* Buyers */

.uses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.uses li {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-2);
}

/* FAQ */

.qa {
  display: grid;
  gap: 0;
  margin: 0;
}

.qa > div {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 820px) {
  .qa > div {
    display: grid;
    grid-template-columns: 17rem 1fr;
    gap: 2rem;
  }
}

.qa dt {
  font-weight: 600;
  color: var(--ink);
}

.qa dd {
  margin: 0.4rem 0 0;
  font-size: 0.94rem;
}

@media (min-width: 820px) {
  .qa dd {
    margin-top: 0;
  }
}

/* Closing */

.end {
  padding: 4.5rem 0;
  background: var(--ink);
  color: #fff;
}

.end h2 {
  max-width: 24ch;
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.end p {
  margin-top: 1rem;
  max-width: 48ch;
  color: #a3a9b4;
}

.end .btn {
  margin-top: 1.75rem;
  background: #fff;
  border-color: #fff;
  color: var(--ink);
}

.end .btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Footer */

.foot {
  padding: 2.25rem 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-3);
}

.foot__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.foot a {
  color: var(--ink-3);
}

.foot a:hover {
  color: var(--ink);
}

/* Document pages: privacy, terms, welcome */

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 60px;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.wordmark:hover {
  text-decoration: none;
}

.wordmark-tld {
  color: var(--accent);
}

.legal-page {
  padding: 3rem 0 4rem;
}

.legal-page .wrap {
  max-width: 46rem;
}

.legal-page h1 {
  font-size: clamp(1.9rem, 4vw, 2.4rem);
}

.legal-page h2 {
  margin: 2.25rem 0 0.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: 1.1rem;
}

.legal-page h3 {
  margin: 1.5rem 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.legal-page p,
.legal-page li {
  font-size: 0.95rem;
}

.legal-page p {
  margin: 0.75rem 0;
}

.legal-page ul,
.legal-page ol {
  margin: 0.75rem 0;
  padding-left: 1.2rem;
}

.legal-page li {
  margin: 0.35rem 0;
}

.legal-meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-4);
}

.legal-summary,
.legal-toc {
  margin: 1.75rem 0;
  padding: 1.1rem 1.25rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-wash);
}

.legal-summary__label,
.legal-toc__label {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.legal-toc ol {
  columns: 2;
  column-gap: 2rem;
  font-size: 0.86rem;
}

@media (max-width: 640px) {
  .legal-toc ol {
    columns: 1;
  }
}

.legal-back {
  display: inline-block;
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
}

.site-footer {
  padding: 2.25rem 0;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-3);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-fine {
  color: var(--ink-4);
}

.site-footer a {
  color: var(--ink-3);
}

.site-footer a:hover {
  color: var(--ink);
}

.kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.cmd {
  margin: 1.25rem 0;
  border: 1px solid var(--line-2);
}

.cmd__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.cmd pre {
  margin: 0;
  padding: 0.75rem 0.8rem;
  overflow-x: auto;
  background: var(--ink);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.code-copy {
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.code-copy:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.note {
  margin: 1.25rem 0;
  font-size: 0.9rem;
  color: var(--ink-3);
}

.note--flag {
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--warn);
  background: #fdf6ec;
  color: var(--ink-2);
}

.account {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-2);
}

/* Modal (shared behaviour with main.js) */

.modal {
  position: relative;
  width: min(93vw, 430px);
  padding: 0;
  border: 1px solid var(--ink);
  background: #fff;
  color: var(--ink-2);
}

.modal::backdrop {
  background: rgba(10, 11, 13, 0.55);
}

.modal-step {
  padding: 1.6rem;
}

.modal-form {
  padding: 0;
}

.modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  border: none;
  background: none;
  color: var(--ink-4);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--ink);
}

.modal-step h2 {
  font-size: 1.3rem;
}

.modal-lead {
  margin: 0.45rem 0 0.6rem;
  font-size: 0.88rem;
  color: var(--ink-3);
}

.modal-note {
  margin: 0 0 1.1rem;
  padding-left: 0.7rem;
  border-left: 2px solid var(--line-2);
  font-size: 0.78rem;
  color: var(--ink-4);
}

.modal-fine {
  margin: 0.85rem 0 0;
  font-size: 0.76rem;
  color: var(--ink-3);
}

.modal-step label {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.modal-step input[type="email"],
.modal-step input[type="text"],
.modal-step select {
  width: 100%;
  margin-bottom: 0.9rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 0.9rem;
}

.modal-step input:focus-visible,
.modal-step select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.opt {
  color: var(--ink-4);
}

/* Sign-in block: rendered only for providers that are configured */

.sso__note {
  margin: 0.55rem 0 0;
  font-size: 0.76rem;
  color: var(--ink-3);
}

.sso .btn--block + .btn--block {
  margin-top: 0.5rem;
}

.or {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 1.1rem 0 1rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.or::before,
.or::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.turnstile:not(:empty) {
  margin-bottom: 0.9rem;
}

.choice {
  margin: 0 0 1rem;
  padding: 0;
  border: none;
}

.choice legend {
  padding: 0;
  margin-bottom: 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.choice label {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line-2);
  font-family: var(--sans);
  font-size: 0.85rem;
  letter-spacing: 0;
  color: var(--ink-3);
  cursor: pointer;
}

.choice label + label {
  border-top: none;
}

.choice label:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-wash);
}

.choice input {
  margin: 0.25rem 0 0;
  accent-color: var(--accent);
}

.choice strong {
  color: var(--ink);
}

.check {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-3);
  cursor: pointer;
}

.check input {
  margin: 0.2rem 0 0;
  accent-color: var(--accent);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
}

.modal-back {
  margin-top: 1rem;
  padding: 0;
  border: none;
  background: none;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-4);
  cursor: pointer;
}

.modal-back:hover {
  color: var(--ink);
}

.form-status {
  margin: 0.7rem 0 0;
  font-size: 0.82rem;
}

.form-status.success {
  color: var(--ok);
}

.form-status.error {
  color: #b91c1c;
}