:root {
  color-scheme: light;
  --porcelain: #F7F8FA;
  --white: #FFFFFF;
  --ink: #111827;
  --graphite: #586174;
  --cobalt: #2457FF;
  --signal-aqua: #9FFFE0;
  --display: "Arial Narrow", "Avenir Next Condensed", Arial, sans-serif;
  --body: Inter, ui-sans-serif, system-ui, sans-serif;
  --utility: ui-monospace, SFMono-Regular, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--porcelain);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
}

.protocol-hero,
main,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.protocol-hero {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: clamp(40px, 8vw, 110px);
  min-height: 560px;
  padding-block: 32px 72px;
  border-bottom: 3px solid var(--ink);
}

.protocol-rail {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--ink);
  color: var(--graphite);
  font-family: var(--utility);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-mark {
  width: 18px;
  height: 18px;
  background: var(--signal-aqua);
  border: 1px solid var(--ink);
}

.protocol-code {
  color: var(--graphite);
  font-family: var(--utility);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy {
  align-self: end;
  max-width: 850px;
}

.buyer-label,
.section-kicker {
  margin: 0 0 18px;
  color: var(--cobalt);
  font-family: var(--utility);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
p,
dl,
dd {
  margin-top: 0;
}

h1 {
  max-width: 940px;
  margin-bottom: 28px;
  font-family: var(--display);
  font-size: clamp(56px, 8vw, 112px);
  font-stretch: condensed;
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.88;
}

.supporting-line {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--graphite);
  font-size: clamp(20px, 2.3vw, 29px);
  line-height: 1.35;
}

.offer-section {
  padding-block: 72px 96px;
}

.section-heading {
  max-width: 710px;
}

.section-heading h2 {
  margin-bottom: 32px;
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 66px);
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.offer-ledger {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 0;
  border-top: 3px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.ledger-cell {
  min-height: 220px;
  padding: 22px;
  background: var(--white);
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.ledger-cell--signal {
  background: linear-gradient(135deg, var(--white) 0 78%, var(--signal-aqua) 78%);
}

.ledger-cell dt {
  margin-bottom: 58px;
  color: var(--graphite);
  font-family: var(--utility);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ledger-cell dd {
  margin-bottom: 0;
  font-family: var(--display);
  font-size: clamp(23px, 2.2vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.interest-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.8fr);
  gap: clamp(40px, 8vw, 120px);
  padding-block: 72px 96px;
  border-top: 3px solid var(--ink);
}

.expectation-boundary {
  align-self: start;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
  color: var(--graphite);
}

.interest-panel {
  padding: clamp(28px, 5vw, 64px);
  background: var(--white);
  border: 1px solid var(--ink);
  box-shadow: 14px 14px 0 var(--signal-aqua);
}

form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.field {
  display: grid;
  gap: 8px;
}

.field:first-of-type,
.consent-field,
button {
  grid-column: 1 / -1;
}

label {
  font-family: var(--utility);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

input[type="email"],
input[type="text"] {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  background: var(--porcelain);
  border: 1px solid var(--graphite);
  color: var(--ink);
  font: inherit;
}

.consent-field {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: start;
  padding-block: 8px;
}

.consent-field input {
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  accent-color: var(--cobalt);
}

.consent-field label {
  color: var(--graphite);
  font-family: var(--body);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
}

button {
  min-height: 58px;
  padding: 14px 20px;
  background: var(--cobalt);
  border: 2px solid var(--cobalt);
  color: var(--white);
  cursor: pointer;
  font-family: var(--utility);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

input:focus-visible,
button:focus-visible {
  outline: 4px solid var(--cobalt);
  outline-offset: 4px;
}

footer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  padding-block: 42px 60px;
  border-top: 1px solid var(--ink);
}

.disclosure h2 {
  font-family: var(--utility);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.disclosure p {
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 13px;
}

footer > .protocol-code {
  grid-column: 1 / -1;
  margin: 18px 0 0;
}

@media (max-width: 980px) {
  .protocol-hero {
    grid-template-columns: 1fr;
    gap: 56px;
    min-height: auto;
  }

  h1 {
    font-size: clamp(54px, 10vw, 92px);
  }
}

@media (max-width: 760px) {
  .protocol-hero,
  main,
  footer {
    width: min(100% - 28px, 620px);
  }

  .protocol-hero,
  .interest-section {
    grid-template-columns: 1fr;
  }

  .protocol-hero {
    gap: 56px;
    min-height: auto;
    padding-bottom: 56px;
  }

  h1 {
    font-size: clamp(50px, 16vw, 76px);
  }

  .offer-ledger,
  footer {
    grid-template-columns: 1fr;
  }

  .ledger-cell {
    min-height: 180px;
  }

  .ledger-cell dt {
    margin-bottom: 36px;
  }

  .interest-section {
    gap: 40px;
  }

  .interest-panel {
    box-shadow: 8px 8px 0 var(--signal-aqua);
  }

  form {
    grid-template-columns: 1fr;
  }

  .field,
  .consent-field,
  button {
    grid-column: 1;
  }
}