/* a2aexchange.com: a trading floor for machines. Phosphor on near-black, hairline grid, mono labels. */
:root {
  --bg: #070b09;
  --panel: #0b120e;
  --panel-2: #0f1813;
  --fg: #e8f3ec;
  --muted: #8fa398;
  --dim: #5d7067;
  --acc: #4cff9a;
  --acc-fg: #04140b;
  --amber: #ffc46b;
  --grid: rgba(140, 255, 196, 0.055);
  --line: rgba(140, 255, 196, 0.14);
  --line-2: rgba(140, 255, 196, 0.26);
  --pad: clamp(16px, 4.4vw, 56px);
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
html {
  background: var(--bg);
}
body {
  color: var(--fg);
  font: 500 1rem/1.6 var(--sans);
  background:
    radial-gradient(90% 520px at 12% -80px, rgba(76, 255, 154, 0.13), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 100% 56px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 50% 0 / 56px 100%,
    var(--bg);
}
h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
a {
  color: inherit;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: 3px;
}
::selection {
  color: var(--acc-fg);
  background: var(--acc);
}
main {
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: var(--pad);
}
.bar,
.foot {
  padding-inline: max(var(--pad), calc((100vw - 1320px) / 2 + var(--pad)));
}

/* Top bar */
.bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-block: 10px;
  font: 400 0.8125rem/1 var(--mono);
  border-bottom: 1px solid var(--line);
}
.bar__id {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin-right: auto;
  color: var(--fg);
  text-decoration: none;
}
.bar__id svg {
  flex: none;
  color: var(--acc);
}
.bar__status {
  display: none;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}
.bar__status i,
.win__live i {
  width: 7px;
  height: 7px;
  background: var(--acc);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(76, 255, 154, 0.6);
  animation: ping 2.4s ease-out infinite;
}
@keyframes ping {
  70%,
  100% {
    box-shadow: 0 0 0 7px rgba(76, 255, 154, 0);
  }
}
.bar__cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  color: var(--acc);
  text-decoration: none;
  border: 1px solid var(--line-2);
}
.bar__cta:hover {
  color: var(--acc-fg);
  background: var(--acc);
}

/* Hero */
.hero {
  padding-block: clamp(36px, 8vw, 96px) clamp(40px, 7vw, 88px);
}
.hero__cmd,
.hero__sale {
  font: 400 0.8125rem/1.5 var(--mono);
  color: var(--muted);
}
.hero__cmd span {
  color: var(--acc);
}
.hero__cmd i {
  display: inline-block;
  width: 0.6em;
  height: 1.05em;
  margin-left: 4px;
  vertical-align: -0.18em;
  background: var(--acc);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}
.hero__sale {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 4px;
}
.hero__sale span::after {
  content: " ...";
  color: var(--dim);
}
.hero__sale strong {
  padding: 2px 8px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--acc-fg);
  background: var(--acc);
}
.hero__name {
  margin-top: clamp(18px, 3vw, 30px);
  /* 15 characters on one line. Space Grotesk bold averages about 0.56em a glyph at this tracking. */
  font: 700 clamp(2rem, calc((100vw - 2 * var(--pad)) / 8.4), 9rem) / 0.98 var(--sans);
  letter-spacing: -0.045em;
  white-space: nowrap;
}
.hero__name span {
  color: var(--acc);
}
.hero__cols {
  display: grid;
  gap: 36px;
  margin-top: clamp(22px, 3.4vw, 40px);
}
.hero__pitch {
  max-width: 24em;
  font-size: clamp(1.1875rem, 2.3vw, 1.625rem);
  line-height: 1.36;
  letter-spacing: -0.01em;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 54px;
  padding: 14px 24px;
  font: 700 1.0625rem/1 var(--sans);
  color: var(--acc-fg);
  text-decoration: none;
  background: var(--acc);
  border: 1px solid var(--acc);
  box-shadow: 0 0 34px rgba(76, 255, 154, 0.22);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 44px rgba(76, 255, 154, 0.38);
}
.btn--line {
  color: var(--fg);
  background: transparent;
  border-color: var(--line-2);
  box-shadow: none;
}
.btn--line:hover {
  border-color: var(--acc);
  box-shadow: none;
}
.hero__hint {
  margin-top: 16px;
  font: 400 0.8125rem/1.5 var(--mono);
  color: var(--muted);
}
.readout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-self: start;
  border-top: 1px solid var(--line-2);
  border-left: 1px solid var(--line);
}
.readout div {
  padding: 12px 14px 14px;
  background: rgba(7, 11, 9, 0.7);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.readout dt {
  font: 400 0.6875rem/1.4 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.readout dd {
  margin-top: 4px;
  font-size: 1rem;
  line-height: 1.25;
  font-variant-numeric: tabular-nums;
}

/* Sections */
.sec {
  padding-block: clamp(44px, 6vw, 80px);
  border-top: 1px solid var(--line);
}
.sec__head {
  max-width: 44rem;
}
.eyebrow {
  font: 500 0.75rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--acc);
}
.eyebrow span {
  color: var(--muted);
}
.sec h2 {
  margin-top: 14px;
  font: 700 clamp(1.75rem, 4.6vw, 3rem) / 1.05 var(--sans);
  letter-spacing: -0.03em;
  text-wrap: balance;
}
.sec__lede {
  max-width: 36em;
  margin-top: 14px;
  color: var(--muted);
}

/* Mockup: the exchange board */
.win {
  margin-top: clamp(24px, 4vw, 44px);
}
.win__body {
  font: 400 0.75rem/1.45 var(--mono);
  background: var(--panel);
  border: 1px solid var(--line-2);
  box-shadow: 0 40px 90px -40px rgba(76, 255, 154, 0.25);
}
.win figcaption {
  margin-top: 12px;
  font: 400 0.75rem/1.5 var(--mono);
  color: var(--muted);
}
.win__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 20px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
}
.win__brand {
  padding-block: 13px;
  font: 700 0.9375rem/1 var(--sans);
  letter-spacing: -0.02em;
}
.win__tabs {
  display: none;
  align-self: stretch;
}
.win__tabs li {
  display: flex;
  align-items: center;
  padding-inline: 14px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.win__tabs .is-on {
  color: var(--fg);
  border-color: var(--acc);
}
.win__live {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: var(--muted);
}
.win__live i {
  animation: none;
}
.req {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 14px 14px 16px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
}
.req__id {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--acc);
}
.req__text {
  font: 500 0.9375rem/1.35 var(--sans);
  color: var(--fg);
}
.req__meta {
  color: var(--muted);
}
.req__meta b {
  margin-right: 10px;
  font-weight: 500;
  color: var(--fg);
}
.req__bar {
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: var(--line);
}
.req__bar i {
  display: block;
  width: 62%;
  height: 100%;
  background: var(--acc);
}
.board__head {
  display: none;
}
.board__rows li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  grid-template-areas: "agent agent st" "skill skill skill" "price lat .";
  gap: 3px 16px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.board__rows .is-hit {
  background: linear-gradient(90deg, rgba(76, 255, 154, 0.1), transparent 70%);
  box-shadow: inset 2px 0 var(--acc);
}
.c-agent {
  grid-area: agent;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--fg);
}
.c-agent i {
  flex: none;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  font-size: 0.625rem;
  font-style: normal;
  color: var(--acc);
  border: 1px solid var(--line-2);
}
.c-skill {
  grid-area: skill;
  padding-left: 36px;
  font: 500 0.875rem/1.35 var(--sans);
  color: var(--muted);
}
.c-price {
  grid-area: price;
  padding-left: 36px;
  color: var(--fg);
}
.c-lat {
  grid-area: lat;
  color: var(--muted);
}
.c-st {
  grid-area: st;
  justify-self: end;
  padding: 2px 7px;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--acc);
  border: 1px solid currentColor;
}
.c-st--busy {
  color: var(--dim);
}
.c-st--bid {
  color: var(--acc-fg);
  background: var(--acc);
  border-color: var(--acc);
}
.feed {
  background: var(--panel-2);
}
.feed__head {
  display: flex;
  justify-content: space-between;
  padding: 12px 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
  border-bottom: 1px solid var(--line);
}
.feed__head span {
  color: var(--dim);
}
.feed li {
  padding: 11px 14px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.feed li:last-child {
  border-bottom: 0;
}
.feed b {
  font-weight: 500;
  color: var(--fg);
}
.feed li p:last-child {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 2px;
  font-size: 0.6875rem;
}
.feed li span {
  color: var(--dim);
}
.feed li:first-child p:last-child {
  color: var(--acc);
}

/* Use cases */
.cases {
  display: grid;
  margin-top: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line-2);
  background: var(--panel);
}
.cases li {
  padding: 24px 20px 28px;
  border-bottom: 1px solid var(--line);
}
.cases li:last-child {
  border-bottom: 0;
}
.cases__num {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 500 0.75rem/1 var(--mono);
  color: var(--acc);
}
.cases__num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.cases h3 {
  margin-top: 22px;
  font: 700 1.375rem/1.15 var(--sans);
  letter-spacing: -0.02em;
}
.cases h3 + p {
  margin-top: 10px;
  color: var(--muted);
}

/* Why this name */
.spec {
  display: grid;
  margin-top: clamp(24px, 4vw, 44px);
  border-top: 1px solid var(--line-2);
}
.spec div {
  display: grid;
  align-content: start;
  gap: 8px;
  padding-block: 20px;
  border-bottom: 1px solid var(--line);
}
.spec dt {
  font: 500 0.75rem/1.5 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--acc);
}
.spec dd {
  max-width: 34em;
  font-size: 1.0625rem;
  line-height: 1.5;
}

/* Offer panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--line-2);
}
.panel__bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  font: 400 0.75rem/1.4 var(--mono);
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.panel__bar span:first-child {
  color: var(--acc);
}
.panel__grid {
  display: grid;
  gap: 32px;
  padding: 28px 16px 24px;
}
.panel__intro h2 {
  font-size: clamp(2rem, 5vw, 3.25rem);
}
.terms {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  font: 400 0.8125rem/1.5 var(--mono);
  color: var(--muted);
}
.terms {
  counter-reset: t;
}
.terms li {
  display: grid;
  grid-template-columns: 28px 1fr;
  counter-increment: t;
}
.terms li::before {
  content: "0" counter(t);
  color: var(--acc);
}
.lot {
  display: none;
}
.offer-form {
  --offer-fg: var(--fg);
  --offer-muted: var(--muted);
  --offer-field-bg: #050806;
  --offer-border: var(--line-2);
  --offer-accent: var(--acc);
  --offer-accent-fg: var(--acc-fg);
  --offer-error: #ff9282;
  --offer-radius: 0px;
  --offer-gap: 18px;
  scroll-margin-top: 72px;
}
.offer-label {
  font: 500 0.6875rem/1.4 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.offer-optional {
  letter-spacing: 0.04em;
  text-transform: none;
}
.offer-input {
  font-family: var(--mono);
  font-weight: 400;
  caret-color: var(--acc);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.offer-input:hover {
  border-color: rgba(140, 255, 196, 0.45);
}
.offer-input:focus-visible {
  outline: 0;
  border-color: var(--acc);
  box-shadow: 0 0 0 3px rgba(76, 255, 154, 0.2);
}
.offer-input[aria-invalid="true"] {
  border-color: var(--offer-error);
  box-shadow: inset 3px 0 var(--offer-error);
}
.offer-amount__prefix {
  font-family: var(--mono);
  color: var(--acc);
}
.offer-hint,
.offer-fineprint,
.offer-error {
  font-family: var(--mono);
  font-size: 0.75rem;
}
.offer-error::before {
  content: "! ";
}
.offer-error--form {
  padding: 12px 14px;
  background: rgba(255, 146, 130, 0.08);
  border: 1px solid var(--offer-error);
}
.offer-submit,
.offer-bin__btn {
  font: 700 1.0625rem/1 var(--sans);
  transition: box-shadow 0.15s;
}
.offer-submit {
  min-height: 56px;
  box-shadow: 0 0 34px rgba(76, 255, 154, 0.2);
}
.offer-submit:hover,
.offer-bin__btn:hover {
  box-shadow: 0 0 44px rgba(76, 255, 154, 0.4);
}
.offer-submit[disabled] {
  opacity: 1;
  color: var(--acc);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--acc);
}
.offer-bin {
  padding: 16px;
  background: var(--panel-2);
  border-color: var(--acc);
}
.offer-bin__label,
.offer-or {
  font: 400 0.6875rem/1.4 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.offer-bin__price {
  font: 700 1.75rem/1.1 var(--sans);
  letter-spacing: -0.02em;
}
.offer-success {
  padding: 24px 20px;
  background: var(--panel-2);
  border: 1px solid var(--acc);
  box-shadow: inset 4px 0 var(--acc);
}
.offer-success__title {
  font: 700 1.75rem/1.1 var(--sans);
  letter-spacing: -0.02em;
}
.offer-success__title::before {
  content: "sent / 200 ok";
  display: block;
  margin-bottom: 12px;
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--acc);
}
.offer-success__body {
  color: var(--muted);
}
.offer-success__body strong {
  font-weight: 500;
  color: var(--fg);
}

/* Footer */
.foot {
  display: grid;
  gap: 10px;
  padding-block: 28px 44px;
  font: 400 0.75rem/1.6 var(--mono);
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.foot p {
  max-width: 64em;
}

@media (min-width: 600px) {
  .bar__status {
    display: flex;
  }
  .win__tabs {
    display: flex;
  }
  .hero__sale span::after {
    content: " ........";
  }
  .readout {
    max-width: 30rem;
  }
  .readout dd {
    font-size: 1.125rem;
  }
  .req {
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
    gap: 16px;
  }
  .panel__grid {
    padding: 36px 28px 32px;
  }
}
@media (min-width: 700px) {
  .board__head,
  .board__rows li {
    display: grid;
    grid-template-columns: minmax(150px, 1.15fr) minmax(0, 1.7fr) 84px 72px 78px;
    grid-template-areas: none;
    gap: 14px;
    padding: 11px 16px;
  }
  .board__head {
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dim);
    border-bottom: 1px solid var(--line);
  }
  .board__rows li > span {
    grid-area: auto;
  }
  .c-skill,
  .c-price {
    padding-left: 0;
  }
  .board__rows li:last-child {
    border-bottom: 0;
  }
  .c-st {
    justify-self: start;
  }
}
@media (min-width: 820px) {
  .cases {
    grid-template-columns: repeat(3, 1fr);
  }
  .cases li {
    padding: 28px 28px 36px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }
  .cases li:last-child {
    border-right: 0;
  }
  .spec {
    grid-template-columns: 1fr 1fr;
    column-gap: 56px;
  }
  .panel__grid {
    grid-template-columns: 1fr 1.05fr;
    gap: 56px;
    padding: 52px 48px 48px;
  }
  .panel__intro {
    display: flex;
    flex-direction: column;
  }
  .lot {
    display: block;
    margin-top: auto;
    padding-top: 40px;
    font: 700 clamp(1.5rem, 3vw, 2.5rem) / 1 var(--sans);
    letter-spacing: -0.04em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(140, 255, 196, 0.4);
  }
}
@media (min-width: 1040px) {
  .hero__cols {
    grid-template-columns: 1fr minmax(360px, 30rem);
    gap: 64px;
  }
  .floor {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
  }
  .feed {
    border-left: 1px solid var(--line);
  }
  .spec div {
    grid-template-columns: 150px 1fr;
    gap: 20px;
  }
}