:root {
  color-scheme: light;
  --ink: #111417;
  --muted: #5d6570;
  --paper: #f6f7f4;
  --white: #ffffff;
  --line: #d8ddd7;
  --night: #111417;
  --charcoal: #20262b;
  --teal: #167d83;
  --gold: #b28a35;
  --red: #a93736;
  --sage: #dce5dc;
  --soft-gold: #f4ecd6;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}

a { color: inherit; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  color: var(--white);
  background: rgba(17, 20, 23, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
}

.brand {
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
}

nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.82);
}

nav a:hover { color: var(--white); }

.hero {
  position: relative;
  min-height: 78vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--night);
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 12, 14, 0.94) 0%, rgba(10, 12, 14, 0.72) 48%, rgba(10, 12, 14, 0.16) 82%),
    linear-gradient(0deg, rgba(10, 12, 14, 0.58) 0%, rgba(10, 12, 14, 0) 44%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 44px));
  margin: 0 auto;
  padding: 106px 0 58px;
}

.kicker,
.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--gold);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: 118px;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 19px;
  letter-spacing: 0;
}

.lead {
  max-width: 700px;
  margin-bottom: 24px;
  font-size: 22px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions,
.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.button.primary {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.text-link {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 9px 13px;
  border: 1px solid var(--teal);
  color: var(--teal);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.band {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.section,
.intro {
  padding: 72px 0;
}

.section-inner {
  width: min(1120px, calc(100% - 44px));
  margin: 0 auto;
}

.intro-grid,
.two-column,
.signal-grid,
.mvp-grid,
.token-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 44px;
  align-items: start;
}

.intro-grid > p,
.section-note {
  color: var(--muted);
  font-size: 16px;
}

.section-note {
  max-width: 500px;
  margin-bottom: 0;
}

.section-note.wide {
  max-width: 760px;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 28px;
}

.tiles,
.guardrail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.tile,
.guardrail-grid article,
.signal-list article,
.mvp-list article,
.token-panel,
.workflow-step {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(17, 20, 23, 0.05);
}

.tile {
  min-height: 216px;
  padding: 20px;
}

.tile-label {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--sage);
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
}

.tile p,
.guardrail-grid p,
.workflow-step span {
  color: var(--muted);
  margin-bottom: 0;
}

.signal-band {
  background: var(--charcoal);
  color: var(--white);
}

.signal-band .section-note,
.signal-list article span {
  color: rgba(255, 255, 255, 0.74);
}

.signal-list,
.mvp-list {
  display: grid;
  gap: 12px;
}

.signal-list article,
.mvp-list article {
  padding: 16px;
}

.signal-list article {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

.signal-list strong,
.mvp-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.signal-list span,
.mvp-list span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.two-column p,
.token-grid p {
  color: var(--muted);
}

.workflow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.workflow-step {
  min-height: 122px;
  padding: 17px;
  border-left: 4px solid var(--teal);
}

.workflow-step strong {
  display: block;
  margin-top: 8px;
  font-size: 18px;
}

.mvp-band {
  background: var(--soft-gold);
}

.mvp-list article {
  background: rgba(255, 255, 255, 0.78);
}

.token-panel {
  padding: 22px;
}

dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

dl div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

dl div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

dt {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

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

.guardrails {
  background: var(--white);
}

.guardrail-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guardrail-grid article {
  min-height: 160px;
  padding: 20px;
}

footer {
  padding: 28px 0;
  background: var(--night);
  color: var(--white);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
}

.footer-grid strong {
  color: var(--white);
}

.sms-page,
.not-found {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: 64px 0;
}

.sms-page {
  background: var(--paper);
}

.sms-page h1 {
  color: var(--ink);
  font-size: 68px;
}

.sms-page .lead {
  color: var(--muted);
}

.sms-card {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  margin-top: 28px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(17, 20, 23, 0.05);
}

.sms-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
}

.sms-url {
  color: var(--teal);
  font-weight: 800;
}

.not-found {
  background: var(--night);
  color: var(--white);
}

.not-found section {
  width: min(680px, calc(100% - 44px));
  margin: 0 auto;
}

.not-found p {
  color: rgba(255, 255, 255, 0.76);
}

@media (max-width: 900px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    gap: 16px;
  }

  nav {
    max-width: 74%;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px 14px;
  }

  .hero {
    min-height: 82vh;
  }

  h1 {
    font-size: 86px;
  }

  h2 {
    font-size: 30px;
  }

  .intro-grid,
  .two-column,
  .signal-grid,
  .mvp-grid,
  .token-grid,
  .section-title {
    grid-template-columns: 1fr;
    display: grid;
    gap: 24px;
  }

  .tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 18px;
  }

  nav {
    display: none;
  }

  .hero-content,
  .section-inner {
    width: min(100% - 30px, 1120px);
  }

  .hero-content {
    padding-top: 96px;
  }

  h1 {
    font-size: 66px;
  }

  h2 {
    font-size: 27px;
  }

  .lead {
    font-size: 19px;
  }

  .section,
  .intro {
    padding: 52px 0;
  }

  .tiles,
  .guardrail-grid,
  .workflow,
  .sms-card {
    grid-template-columns: 1fr;
  }

  .sms-page h1 {
    font-size: 46px;
  }

  dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}