:root {
  color-scheme: light;
  --ink: #12233f;
  --muted: #60708a;
  --line: #cfe0f4;
  --blue: #2868d8;
  --blue-soft: #eaf4ff;
  --white: #ffffff;
  --navy: #102743;
  --navy-soft: #a9c2df;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f7fbff;
  color: var(--ink);
}

a {
  color: inherit;
}

.site-header,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.35rem clamp(1.25rem, 5vw, 5rem);
  border-bottom: 1px solid var(--line);
  background: rgb(255 255 255 / 92%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid #9ec3ee;
  border-radius: 0.6rem;
  color: var(--blue);
  background: var(--blue-soft);
}

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

nav a {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 650;
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: var(--blue);
}

.hero,
.principles,
.verification,
.legal-page {
  padding: clamp(5rem, 10vw, 9rem) clamp(1.25rem, 8vw, 8rem);
}

.hero {
  min-height: 72vh;
  background:
    radial-gradient(circle at 82% 18%, rgb(77 151 235 / 22%), transparent 28rem),
    linear-gradient(145deg, #fbfdff, #e8f4ff);
}

.eyebrow,
.card-number {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 15ch;
  margin: 1.25rem 0 1.5rem;
  font-size: clamp(3rem, 7vw, 6.4rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

h2 {
  max-width: 18ch;
  font-size: clamp(2rem, 4vw, 3.8rem);
  letter-spacing: -0.04em;
  line-height: 1.06;
}

.hero-copy,
.legal-page > p,
.legal-page li {
  max-width: 46rem;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.primary-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.9rem 1.2rem;
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  font-weight: 750;
  text-decoration: none;
}

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

.section-heading {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.section-heading > span {
  color: #58708c;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card-grid article {
  min-height: 16rem;
  padding: 2rem;
  border: 1px solid var(--line);
  background: #f8fbff;
}

.card-grid h3 {
  margin-top: 4rem;
  font-size: 1.25rem;
}

.card-grid p {
  color: var(--muted);
  line-height: 1.65;
}

.verification {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(3rem, 8vw, 8rem);
  background: var(--navy);
  color: var(--white);
}

.verification .eyebrow {
  color: #8fc3ff;
}

.verification ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.verification li {
  padding: 1.1rem 0;
  border-bottom: 1px solid rgb(255 255 255 / 16%);
  color: var(--navy-soft);
  line-height: 1.55;
}

footer {
  align-items: flex-start;
  border-top: 1px solid var(--line);
  border-bottom: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.legal-page {
  min-height: 70vh;
  background: var(--white);
}

.legal-page h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
}

.legal-page h2 {
  margin-top: 3rem;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.legal-page ul {
  padding-left: 1.2rem;
}

@media (max-width: 760px) {
  .site-header,
  footer,
  .verification {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header nav a:not(:last-child) {
    display: none;
  }

  .card-grid,
  .verification {
    grid-template-columns: 1fr;
  }

  .section-heading {
    grid-template-columns: 1fr;
  }
}

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