:root {
  --navy: #0B2A52;
  --navy-deep: #071C38;
  --ink: #0E2744;
  --sky: #E7F1F8;
  --mist: #F6FBFE;
  --cloud: #ffffff;
  --line: rgba(11, 42, 82, 0.14);
  --soft: rgba(11, 42, 82, 0.62);
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Sora", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--mist);
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; line-height: 1.12; margin: 0; }
p { margin: 0; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.skip-link {
  position: absolute; left: -999px; top: 8px;
}
.skip-link:focus { left: 12px; background: #fff; padding: 8px 12px; z-index: 80; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(246, 251, 254, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.site-header.scrolled {
  background: rgba(246, 251, 254, 0.94);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(11, 42, 82, 0.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-family: var(--sans); font-size: 14px; letter-spacing: 0.12em; text-transform: uppercase; }
.brand-text em { font-style: normal; font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--soft); }
.nav { display: flex; align-items: center; gap: 22px; font-size: 13px; font-weight: 500; }
.nav a { text-decoration: none; }
.nav a:hover { color: var(--navy); }
.nav-cta {
  background: var(--navy); color: #fff !important;
  padding: 10px 16px; border-radius: 999px;
}
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px;
}
.nav-toggle span { display: block; height: 2px; background: var(--navy); margin: 6px 0; }

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--navy);
}
.hero-sky {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 480px at 70% 8%, #ffffff 0%, transparent 60%),
    linear-gradient(180deg, #d7e8f5 0%, #eef6fb 42%, #f7fbfe 100%);
}
.cloud {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.55);
  filter: blur(18px);
  animation: drift 28s ease-in-out infinite;
}
.c1 { width: 420px; height: 140px; top: 8%; left: 8%; }
.c2 { width: 560px; height: 180px; top: 18%; right: -8%; animation-duration: 34s; }
.c3 { width: 380px; height: 120px; top: 40%; left: 40%; animation-duration: 40s; opacity: .7; }
@keyframes drift {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(28px); }
}
.hero-wash {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(247,251,254,.92) 100%);
}
.vapor { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.vapor-line {
  fill: none; stroke: var(--navy); stroke-width: 1.6;
  stroke-dasharray: 8 10; opacity: 0.45;
  animation: dash 18s linear infinite;
}
.horizon-line { fill: none; stroke: var(--navy); stroke-width: 1; opacity: 0.22; }
@keyframes dash { to { stroke-dashoffset: -360; } }

.craft {
  position: absolute; top: 28%; left: -8%;
  width: 72px; opacity: 0.9;
  animation: fly 16s ease-in-out infinite;
  filter: drop-shadow(0 8px 10px rgba(11,42,82,.18));
}
@keyframes fly {
  0% { transform: translate(0, 20px) rotate(-8deg); }
  50% { transform: translate(72vw, -70px) rotate(4deg); }
  100% { transform: translate(108vw, -30px) rotate(-2deg); }
}

.hero-inner { position: relative; z-index: 2; padding: 12vh 0 72px; max-width: 780px; }
.eyebrow {
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(42px, 7vw, 78px); margin-bottom: 22px; }
.hero h1 em { font-style: italic; }
.lede { font-size: 17px; max-width: 58ch; color: var(--soft); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 13px 20px; border-radius: 999px; transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-navy { background: var(--navy); color: #fff; box-shadow: 0 10px 24px rgba(11,42,82,.2); }
.btn-ghost { border: 1px solid var(--navy); background: rgba(255,255,255,.5); }

/* Manifesto */
.manifesto { background: var(--navy); color: #eef5fb; padding: 88px 0; }
.manifesto-inner { max-width: 820px; }
.quote-mark { font-family: var(--serif); font-size: 88px; line-height: 0.6; opacity: 0.35; }
.manifesto blockquote { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 40px); line-height: 1.25; margin: 8px 0 22px; }
.quote-attr { letter-spacing: 0.18em; text-transform: uppercase; font-size: 11px; opacity: 0.7; }

/* Altitudes */
.altitudes { padding: 96px 0; background: var(--cloud); }
.section-intro { max-width: 640px; margin-bottom: 40px; }
.section-intro h2 { font-size: clamp(32px, 4vw, 48px); margin: 8px 0 14px; }
.section-intro p { color: var(--soft); }
.kicker { font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 600; color: var(--navy); }
.levels { list-style: none; padding: 0; margin: 0; }
.level {
  display: grid; grid-template-columns: 120px 1fr;
  gap: 24px; align-items: center;
  padding: 28px 16px;
  margin: 0 -8px;
  border-top: 1px solid var(--line);
  border-radius: 12px;
  transform: translateX(calc(var(--i) * 12px));
  transition: transform .28s ease, background .28s ease, box-shadow .28s ease;
}
.level:last-child { border-bottom: 1px solid var(--line); }
.fl {
  font-family: var(--sans); font-size: 13px; letter-spacing: 0.2em;
  font-weight: 700; color: var(--navy);
}
.level h3 { font-size: 30px; margin-bottom: 6px; }
.level p { color: var(--soft); max-width: 56ch; }

/* Method */
.method { background: var(--navy-deep); color: #e8f1f8; padding: 96px 0; }
.method .kicker { color: #d5e7f6; }
.method .section-intro p { color: rgba(240, 247, 252, 0.92); }
.path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 20px; }
.path-step {
  padding: 28px 22px 22px;
  border-top: 1px solid rgba(255,255,255,.18);
  border-radius: 14px;
  transition: transform .28s ease, background .28s ease, box-shadow .28s ease;
}
.step-no { display: block; font-size: 12px; letter-spacing: 0.2em; color: #cfe0f1; margin-bottom: 14px; }
.path-step h3 { font-size: 32px; margin-bottom: 10px; color: #fff; }
.path-step p { color: rgba(236, 245, 252, 0.88); }

/* Partners */
.partners { padding: 96px 0; background: var(--sky); }
.partners-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.partner-lanes { list-style: none; margin: 0; padding: 0; }
.partner-lanes li {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  display: grid; gap: 6px;
  border-radius: 8px;
  transition: transform .28s ease, padding-left .28s ease;
}
.partner-lanes strong { font-family: var(--serif); font-size: 28px; font-weight: 400; }
.partner-lanes span { color: var(--soft); }

/* FAQ + contact */
.faq-block { padding: 88px 0; background: var(--cloud); }
.faq-layout { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 40px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0;
  font: 600 16px var(--sans); padding: 18px 0; cursor: pointer; color: var(--navy);
}
.faq-a { display: none; padding: 0 0 18px; color: var(--soft); }
.faq-item.open .faq-a { display: block; }

.contact { padding: 100px 0 110px; background: var(--mist); text-align: center; }
.contact h2 { font-size: clamp(34px, 5vw, 56px); margin: 10px 0 16px; }
.contact p { max-width: 52ch; margin: 0 auto 28px; color: var(--soft); }

.site-footer { border-top: 1px solid var(--line); padding: 22px 0; background: var(--cloud); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; font-size: 13px; color: var(--soft); }
.brand-foot { text-decoration: none; font-weight: 600; color: var(--navy); }

.js .reveal { opacity: 0; transform: translateY(18px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .7s ease, transform .7s ease, background .28s ease, box-shadow .28s ease; }

@media (hover: hover) and (pointer: fine) {
  .level:hover {
    background: #f3f8fc;
    transform: translateX(10px);
    box-shadow: 0 14px 30px rgba(11, 42, 82, 0.08);
  }
  .path-step:hover {
    background: rgba(255, 255, 255, 0.07);
    transform: translateY(-8px);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
  }
  .partner-lanes li:hover {
    transform: translateX(10px);
    padding-left: 8px;
  }
  .faq-item:hover .faq-q { letter-spacing: 0.01em; }
  .btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(11, 42, 82, 0.22); }
  .nav a:hover { transform: translateY(-1px); }
}

@media (max-width: 860px) {
  .nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 16px 20px 22px; gap: 14px;
    border-bottom: 1px solid var(--line);
  }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .level, .path, .partners-grid, .faq-layout, .footer-inner { grid-template-columns: 1fr; }
  .level { transform: none; }
  .path-step { padding-right: 0; }
  .hero { min-height: 88vh; }
  .header-inner { min-height: 64px; }
}