:root {
  --ink: #152536;
  --muted: #526273;
  --paper: #f7f4ec;
  --white: #ffffff;
  --navy: #102d46;
  --blue: #1d6f8a;
  --cyan: #62c5c8;
  --gold: #f4b860;
  --line: rgba(21, 37, 54, 0.14);
  --shadow: 0 20px 50px rgba(16, 45, 70, 0.12);
  --radius: 24px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 7% 9%, rgba(98, 197, 200, 0.2), transparent 25rem),
    radial-gradient(circle at 95% 25%, rgba(244, 184, 96, 0.16), transparent 24rem);
}

a {
  color: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: absolute;
  z-index: 100;
  top: -5rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  color: var(--white);
  background: var(--navy);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--white);
  background: rgba(16, 45, 70, 0.96);
  backdrop-filter: blur(14px);
}

.nav-wrap,
.container {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.nav-wrap {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--white);
  font-weight: 780;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  color: var(--navy);
  background: var(--cyan);
  font-family: Georgia, serif;
  font-size: 1.4rem;
}

.nav-toggle {
  display: none;
  padding: 0.5rem;
  border: 0;
  color: var(--white);
  background: transparent;
  font: inherit;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px;
  background: currentColor;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.site-nav a {
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 11vw, 9rem) 0;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(16, 45, 70, 0.99), rgba(16, 45, 70, 0.83)),
    url("quantum-grid.svg") center / cover;
}

.hero::after {
  position: absolute;
  right: -9rem;
  bottom: -11rem;
  width: 30rem;
  height: 30rem;
  border: 1px solid rgba(98, 197, 200, 0.4);
  border-radius: 50%;
  box-shadow:
    0 0 0 4rem rgba(98, 197, 200, 0.04),
    0 0 0 8rem rgba(98, 197, 200, 0.03);
  content: "";
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow,
.page-hero .eyebrow {
  color: var(--cyan);
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 850px;
  margin-bottom: 1.5rem;
  font-size: clamp(2.7rem, 7vw, 5.8rem);
  font-weight: 780;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.35rem);
}

h3 {
  font-size: 1.3rem;
}

.hero-copy {
  max-width: 690px;
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--navy);
  background: var(--gold);
  font-weight: 760;
  text-decoration: none;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.16);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--white);
  background: transparent;
}

.orbit {
  position: relative;
  width: min(100%, 300px);
  aspect-ratio: 1;
  margin-inline: auto;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
}

.orbit::before,
.orbit::after {
  position: absolute;
  inset: 14%;
  border: 1px solid rgba(98, 197, 200, 0.52);
  border-radius: 50%;
  content: "";
  transform: rotate(58deg) scaleY(0.36);
}

.orbit::after {
  border-color: rgba(244, 184, 96, 0.7);
  transform: rotate(-58deg) scaleY(0.36);
}

.orbit-core {
  position: absolute;
  z-index: 2;
  inset: 50% auto auto 50%;
  display: grid;
  width: 90px;
  height: 90px;
  place-items: center;
  border-radius: 50%;
  color: var(--navy);
  background: var(--cyan);
  font-family: Georgia, serif;
  font-size: 3rem;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 45px rgba(98, 197, 200, 0.4);
}

.section {
  padding: clamp(4rem, 9vw, 7rem) 0;
}

.section-white {
  background: rgba(255, 255, 255, 0.72);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.section-heading p,
.lead {
  color: var(--muted);
  font-size: 1.1rem;
}

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

.card {
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 12px 35px rgba(16, 45, 70, 0.06);
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
}

.card-link {
  display: inline-flex;
  margin-top: 1.2rem;
  color: var(--blue);
  font-weight: 760;
  text-decoration: none;
}

.icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 1.3rem;
  place-items: center;
  border-radius: 14px;
  color: var(--navy);
  background: rgba(98, 197, 200, 0.35);
  font-weight: 850;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
}

.plain-language {
  padding: clamp(2rem, 6vw, 4rem);
  border-radius: 32px;
  color: var(--white);
  background: var(--navy);
  box-shadow: var(--shadow);
}

.plain-language p {
  color: rgba(255, 255, 255, 0.78);
}

.check-list {
  display: grid;
  gap: 1rem;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 2rem;
}

.check-list li::before {
  position: absolute;
  top: 0.1rem;
  left: 0;
  display: grid;
  width: 1.35rem;
  height: 1.35rem;
  place-items: center;
  border-radius: 50%;
  color: var(--navy);
  background: var(--gold);
  content: "\2713";
  font-size: 0.78rem;
  font-weight: 900;
}

.page-hero {
  padding: clamp(4rem, 9vw, 7rem) 0;
  color: var(--white);
  background: var(--navy);
}

.page-hero h1 {
  max-width: 930px;
  font-size: clamp(2.6rem, 6vw, 5rem);
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.2rem;
}

.numbered {
  counter-reset: steps;
}

.numbered .card {
  counter-increment: steps;
}

.numbered .card::before {
  display: block;
  margin-bottom: 1rem;
  color: var(--blue);
  content: "0" counter(steps);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.14em;
}

.callout {
  padding: clamp(2rem, 7vw, 4.5rem);
  border-radius: 32px;
  color: var(--white);
  background: linear-gradient(120deg, var(--blue), var(--navy));
}

.callout p {
  max-width: 740px;
  color: rgba(255, 255, 255, 0.8);
}

.definition-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.definition-grid:last-child {
  border-bottom: 1px solid var(--line);
}

.definition-grid h3,
.definition-grid p {
  margin: 0;
}

.definition-grid p {
  color: var(--muted);
}

.site-footer {
  padding: 3rem 0;
  color: rgba(255, 255, 255, 0.72);
  background: #0a2134;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
}

.footer-brand {
  margin-bottom: 0.8rem;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 780;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 0.75rem 1.2rem;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
}

.fine-print {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.86rem;
}

@media (max-width: 820px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    right: 0;
    left: 0;
    display: none;
    padding: 0.75rem 1rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    background: var(--navy);
  }

  .site-nav[data-open="true"] {
    display: grid;
  }

  .site-nav a {
    padding: 0.8rem 1rem;
  }

  .hero-grid,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    text-align: left;
  }

  .orbit {
    width: 220px;
  }

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

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .definition-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .hero {
    padding-top: 4rem;
  }

  .orbit {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}