:root {
  --ink: #151922;
  --muted: #636b78;
  --paper: #f4f6f8;
  --white: #ffffff;
  --accent: #735cff;
  --accent-dark: #5440d6;
  --lime: #c8ff62;
  --line: #dfe3e9;
  --radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 28px;
  background: rgba(244, 246, 248, .9);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 11px;
  color: var(--white);
  background: var(--ink);
}

nav { display: flex; gap: 24px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }

main, footer { max-width: 1240px; margin: 0 auto; }

.hero {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  min-height: 680px;
  margin: 18px 28px 80px;
  overflow: hidden;
  border-radius: 34px;
  background: var(--white);
}

.not-found { min-height: calc(100vh - 36px); }

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(38px, 7vw, 88px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; line-height: 1.08; }
h1 { max-width: 700px; margin-bottom: 26px; font-size: clamp(44px, 6vw, 76px); letter-spacing: -.055em; }
h2 { margin-bottom: 18px; font-size: clamp(34px, 4vw, 52px); letter-spacing: -.04em; }
h3 { margin-bottom: 12px; font-size: 22px; letter-spacing: -.025em; }

.lead { max-width: 650px; margin: 0 0 32px; color: var(--muted); font-size: 20px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 20px;
  border: 1px solid var(--accent);
  border-radius: 14px;
  color: var(--white);
  background: var(--accent);
  font-weight: 750;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-2px); background: var(--accent-dark); }
.button-ghost { color: var(--ink); border-color: var(--line); background: transparent; }
.button-ghost:hover { background: var(--paper); }
.button-small { min-height: 40px; padding: 9px 14px; font-size: 14px; }

.disclaimer { max-width: 620px; margin: 24px 0 0; color: var(--muted); font-size: 13px; }

.hero-card {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 50%, #8f7cff 0 15%, #735cff 16% 32%, #5d48e8 33% 51%, #1e2330 52% 100%);
}

.core, .node {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-weight: 850;
}

.core { inset: 50% auto auto 50%; width: 120px; height: 120px; transform: translate(-50%, -50%); color: var(--ink); background: var(--lime); font-size: 28px; }
.node { width: 92px; height: 92px; color: var(--white); border: 1px solid rgba(255,255,255,.35); background: rgba(21,25,34,.72); font-size: 13px; backdrop-filter: blur(5px); }
.node-a { top: 12%; left: 12%; }
.node-b { top: 15%; right: 10%; }
.node-c { right: 12%; bottom: 12%; }
.node-d { left: 12%; bottom: 15%; }
.orbit { position: absolute; inset: 50% auto auto 50%; border: 1px solid rgba(255,255,255,.28); border-radius: 50%; transform: translate(-50%, -50%); }
.orbit-a { width: 58%; aspect-ratio: 1; }
.orbit-b { width: 88%; aspect-ratio: 1; }

.section { margin: 0 28px 100px; }
.section-heading { max-width: 720px; margin-bottom: 34px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { display: flex; min-height: 330px; flex-direction: column; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.card p { color: var(--muted); }
.card a { margin-top: auto; color: var(--accent-dark); font-weight: 750; text-decoration: none; }
.card-number { margin-bottom: 56px; color: var(--accent-dark); font-size: 13px; font-weight: 800; }

.route-section { padding: clamp(34px, 6vw, 72px); border-radius: 34px; color: var(--white); background: var(--ink); }
.route-section .eyebrow { color: var(--lime); }
.route-grid { display: grid; gap: 16px; }
.route-grid article { display: grid; grid-template-columns: 74px 1fr; gap: 22px; padding: 25px 0; border-top: 1px solid #363c49; }
.route-grid p { margin: 0 0 12px; color: #adb4c1; }
.route-icon { display: grid; width: 64px; height: 64px; place-items: center; border-radius: 18px; color: var(--ink); background: var(--lime); font-size: 13px; font-weight: 900; }
.text-link { color: var(--lime); font-weight: 750; text-decoration: none; }

.questions { display: grid; grid-template-columns: 1fr 1fr; column-gap: 70px; align-items: start; }
.questions .section-heading { grid-column: 1 / -1; }
.checklist { display: grid; gap: 12px; }
.checklist p { margin: 0; padding: 18px 20px; border-radius: 16px; background: var(--white); }
.checklist span { margin-right: 10px; color: var(--accent-dark); font-weight: 900; }
.questions > .button { justify-self: start; }

footer { display: flex; justify-content: space-between; gap: 30px; margin-bottom: 24px; padding: 30px 28px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
footer p { margin: 0; }

@media (max-width: 850px) {
  .topbar nav, .topbar > .button { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-card { min-height: 440px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 260px; }
  .card-number { margin-bottom: 30px; }
  .questions { grid-template-columns: 1fr; row-gap: 28px; }
  footer { flex-direction: column; }
}

@media (max-width: 520px) {
  .topbar { padding: 14px 18px; }
  .hero, .section { margin-right: 14px; margin-left: 14px; }
  .hero-copy { padding: 36px 24px; }
  .hero-card { min-height: 350px; }
  .node { width: 72px; height: 72px; font-size: 11px; }
  .route-section { padding: 32px 22px; }
  .route-grid article { grid-template-columns: 1fr; }
}