@font-face {
  font-family: 'Manrope';
  src: url('/assets/Manrope-Variable.ttf') format('truetype');
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: #f4f6f8;
  --surface: #ffffff;
  --ink: #0a1628;
  --muted: #536072;
  --line: #d8dee7;
  --blue: #0040ff;
  --blue-dark: #002eb8;
  --gold: #b98513;
  --radius-sm: 14px;
  --radius-md: 24px;
  --radius-lg: 36px;
  --shadow: 0 24px 70px rgba(10, 22, 40, 0.10);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { display: block; max-width: 100%; }
.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link {
  position: fixed;
  z-index: 100;
  left: 16px;
  top: 12px;
  padding: 12px 16px;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 20;
  padding: 20px 0;
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.04em;
}
.brand img { width: 25px; height: 36px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.button) { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 650; }
.nav-links a:hover { color: var(--ink); }
.menu-button { display: none; }

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  background: var(--blue);
  border: 2px solid var(--blue);
  color: white;
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.015em;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.button:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-1px); }
.button--dark { background: var(--ink); border-color: var(--ink); }
.button--dark:hover { background: #17263d; border-color: #17263d; }
.button--light { background: #fff; border-color: #fff; color: var(--ink); }
.button--light:hover { background: var(--paper); border-color: var(--paper); }
a:focus-visible, button:focus-visible { outline: 4px solid rgba(0, 64, 255, 0.28); outline-offset: 3px; }

.hero { padding: 74px 0 90px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; align-items: center; gap: clamp(48px, 8vw, 112px); }
.eyebrow {
  margin: 0 0 20px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
h1, h2, h3, p { text-wrap: pretty; }
h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 7.2vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.068em;
  font-weight: 760;
}
.hero-copy { max-width: 650px; }
.hero-body { max-width: 590px; margin: 28px 0 0; color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.52; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 34px; }
.supporting-line { max-width: 380px; color: var(--muted); font-size: 13px; font-weight: 600; }

.atlas {
  position: relative;
  min-height: 560px;
  border-radius: var(--radius-lg);
  background: var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
  isolation: isolate;
}
.atlas::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}
.atlas-kicker { position: absolute; left: 32px; top: 28px; margin: 0; color: #aebbd0; font-size: 12px; font-weight: 750; letter-spacing: .11em; text-transform: uppercase; }
.atlas-route {
  position: absolute;
  left: 12%; right: 10%; bottom: 18%; height: 58%;
}
.atlas-segment { position: absolute; height: 4px; background: var(--blue); transform-origin: left center; border-radius: 10px; box-shadow: 0 0 24px rgba(0,64,255,.55); }
.atlas-segment.one { width: 35%; left: 0; bottom: 8%; transform: rotate(-26deg); }
.atlas-segment.two { width: 34%; left: 28%; bottom: 31%; transform: rotate(14deg); }
.atlas-segment.three { width: 40%; left: 58%; bottom: 39%; transform: rotate(-35deg); }
.atlas-arrow { position: absolute; right: -2%; top: 8%; width: 28px; height: 28px; border-top: 4px solid var(--blue); border-right: 4px solid var(--blue); transform: rotate(8deg); }
.place {
  position: absolute;
  z-index: 2;
  width: 148px;
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  background: rgba(255,255,255,.08);
  color: white;
  backdrop-filter: blur(10px);
}
.place span { display: block; color: #aebbd0; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.place strong { display: block; margin-top: 5px; font-size: 15px; line-height: 1.25; }
.place.one { left: 7%; bottom: 11%; }
.place.two { left: 39%; bottom: 39%; }
.place.three { right: 7%; top: 16%; }
.atlas-note {
  position: absolute;
  right: 32px;
  bottom: 28px;
  max-width: 220px;
  color: #aebbd0;
  font-size: 12px;
  line-height: 1.45;
}

.principle { padding: 52px 0 104px; }
.principle-line { display: flex; align-items: center; gap: 24px; }
.principle-line::before { content: ''; width: 72px; height: 2px; background: var(--blue); }
.principle-line p { max-width: 760px; margin: 0; font-size: clamp(24px, 3vw, 38px); line-height: 1.25; letter-spacing: -.04em; font-weight: 650; }

.proof-list { padding-bottom: 120px; }
.proof-row { display: grid; grid-template-columns: 0.88fr 1.12fr; gap: clamp(48px, 9vw, 126px); align-items: center; padding: 76px 0; border-top: 1px solid var(--line); }
.proof-row:nth-child(even) .proof-visual { order: -1; }
.proof-copy h2 { margin: 0; font-size: clamp(36px, 5vw, 64px); line-height: 1.04; letter-spacing: -.055em; }
.proof-copy p:last-child { margin: 22px 0 0; max-width: 520px; color: var(--muted); font-size: 18px; }
.proof-visual {
  min-height: 390px;
  position: relative;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 16px 48px rgba(10,22,40,.07);
  overflow: hidden;
}
.proof-caption { margin: 0; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.diagram-stack { position: absolute; left: 28px; right: 28px; top: 76px; display: grid; gap: 12px; }
.diagram-card { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); }
.diagram-card.active { border-color: var(--blue); box-shadow: inset 4px 0 var(--blue); }
.diagram-card span { display: block; color: var(--muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.diagram-card strong { display: block; margin-top: 5px; font-size: 17px; }
.setup-grid { position: absolute; inset: 82px 28px 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.metric { display: flex; flex-direction: column; justify-content: space-between; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; }
.metric span { color: var(--muted); font-size: 12px; font-weight: 650; }
.metric strong { font-size: 28px; letter-spacing: -.04em; }
.progress-line { position: absolute; left: 28px; right: 28px; bottom: 54px; height: 190px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.progress-line::before { content: ''; position: absolute; left: 10%; top: 63%; width: 34%; height: 4px; border-radius: 4px; background: var(--blue); transform: rotate(-17deg); }
.progress-line::after { content: ''; position: absolute; left: 42%; top: 39%; width: 46%; height: 4px; border-radius: 4px; background: var(--blue); transform: rotate(-30deg); }
.pr-dot { position: absolute; right: 6%; top: 3%; width: 76px; height: 76px; display: grid; place-items: center; border-radius: 50%; background: #fff7df; border: 1px solid #e5c873; color: #6d4d08; font-size: 12px; font-weight: 800; text-align: center; }
.question { position: absolute; left: 28px; right: 72px; top: 82px; padding: 18px 20px; border-radius: 18px 18px 4px 18px; background: var(--ink); color: white; font-weight: 650; }
.answer { position: absolute; left: 72px; right: 28px; top: 174px; padding: 20px; border: 1px solid var(--line); border-radius: 18px 18px 18px 4px; background: var(--paper); color: var(--muted); }
.answer-line { height: 8px; margin: 8px 0; border-radius: 8px; background: var(--line); }
.answer-line.short { width: 64%; }

.closing { padding: 0 0 120px; }
.closing-card { position: relative; overflow: hidden; padding: clamp(42px, 7vw, 86px); border-radius: var(--radius-lg); background: var(--blue); color: #fff; }
.closing-card::after { content: ''; position: absolute; width: 380px; height: 380px; right: -140px; top: -170px; border: 70px solid rgba(255,255,255,.1); border-radius: 50%; }
.closing-card h2 { position: relative; z-index: 1; max-width: 800px; margin: 0; font-size: clamp(42px, 6vw, 78px); line-height: 1; letter-spacing: -.06em; }
.closing-card p { position: relative; z-index: 1; max-width: 610px; margin: 24px 0 30px; font-size: 18px; color: rgba(255,255,255,.84); }

.page-hero { padding: 84px 0 64px; }
.page-hero h1 { max-width: 900px; }
.page-lead { max-width: 680px; margin: 28px 0 0; color: var(--muted); font-size: 20px; }
.content-page { padding: 24px 0 120px; }
.content-grid { display: grid; grid-template-columns: 260px minmax(0, 740px); gap: 72px; align-items: start; }
.side-nav { position: sticky; top: 28px; display: grid; gap: 8px; }
.side-nav a { min-height: 44px; display: flex; align-items: center; padding: 8px 12px; border-radius: 10px; color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 650; }
.side-nav a:hover { background: #fff; color: var(--ink); }
.prose h2 { margin: 56px 0 16px; font-size: clamp(26px, 3vw, 36px); letter-spacing: -.04em; line-height: 1.2; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: #38465a; }
.prose p { margin: 0 0 18px; }
.prose li { margin: 8px 0; }
.prose strong { color: var(--ink); }
.prose a { color: var(--blue-dark); text-underline-offset: 3px; }
.support-card { margin: 52px 0; padding: 30px; border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 12px 36px rgba(10,22,40,.06); }
.support-card h2 { margin: 0 0 10px; }
.support-card .button { margin-top: 10px; }
.legal-note { padding: 16px 20px; border-left: 4px solid var(--gold); background: #fff7df; color: #5f460f; }

.not-found { min-height: 68vh; display: grid; place-items: center; text-align: center; }
.not-found h1 { font-size: clamp(60px, 14vw, 150px); color: var(--blue); }
.not-found p { max-width: 460px; margin: 22px auto 30px; color: var(--muted); font-size: 18px; }

.site-footer { padding: 46px 0 54px; border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; gap: 32px; align-items: center; }
.footer-copy { color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); font-size: 13px; font-weight: 650; text-decoration: none; }
.footer-links a:hover { color: var(--ink); }

[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity 500ms ease, transform 500ms ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 860px) {
  .hero { padding-top: 48px; }
  .hero-grid { grid-template-columns: 1fr; }
  .atlas { min-height: 500px; }
  .proof-row { grid-template-columns: 1fr; }
  .proof-row:nth-child(even) .proof-visual { order: initial; }
  .content-grid { grid-template-columns: 1fr; gap: 40px; }
  .side-nav { position: static; grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .nav > .button { display: none; }
  .menu-button {
    min-width: 48px; min-height: 48px; display: grid; place-items: center;
    border: 1px solid var(--line); border-radius: 50%; background: transparent; color: var(--ink); font: inherit; font-weight: 800;
  }
  .nav-links { position: absolute; left: 14px; right: 14px; top: 76px; display: grid; gap: 2px; padding: 14px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: var(--shadow); }
  .nav-links[hidden] { display: none; }
  .nav-links a:not(.button) { min-height: 48px; display: flex; align-items: center; padding: 0 12px; }
  .nav-links .button { margin-top: 8px; }
  .hero { padding: 42px 0 72px; }
  h1 { font-size: clamp(46px, 14vw, 68px); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .atlas { min-height: 450px; border-radius: 26px; }
  .place { width: 126px; padding: 12px; }
  .place.two { left: 34%; }
  .atlas-note { left: 28px; right: 28px; }
  .principle { padding-bottom: 82px; }
  .principle-line { align-items: flex-start; flex-direction: column; gap: 18px; }
  .proof-list { padding-bottom: 90px; }
  .proof-row { padding: 58px 0; gap: 32px; }
  .proof-visual { min-height: 340px; padding: 22px; border-radius: 26px; }
  .setup-grid { inset: 74px 22px 22px; }
  .diagram-stack { left: 22px; right: 22px; top: 70px; }
  .question { left: 22px; right: 46px; top: 74px; }
  .answer { left: 46px; right: 22px; top: 178px; }
  .closing { padding-bottom: 90px; }
  .closing-card { border-radius: 26px; }
  .page-hero { padding: 50px 0 42px; }
  .side-nav { grid-template-columns: 1fr; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .site-header, .site-footer, .side-nav, .closing { display: none; }
  body { background: white; }
  .content-grid { display: block; }
}