:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --fg: #0d1117;
  --fg-muted: #4a5160;
  --fg-dim: #7a8294;
  --accent: #0a8b87;
  --accent-ink: #ffffff;
  --accent-soft: rgba(10, 139, 135, 0.12);
  --border: rgba(13, 17, 23, 0.08);
  --max: 1120px;
  --prose: 720px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  background:
    radial-gradient(1200px 600px at 50% -200px, rgba(10, 139, 135, 0.10), transparent 60%),
    var(--bg);
  min-height: 100vh;
}

@media (min-width: 720px) {
  body { font-size: 18px; }
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(10, 139, 135, 0.35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
a:hover { color: #066461; border-color: var(--accent); }

::selection { background: var(--accent-soft); color: var(--fg); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 14px;
  border: none;
  font-weight: 600;
}
.skip:focus { left: 16px; top: 16px; z-index: 100; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px 0;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom-color: var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  border-bottom: none;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--fg); }
.brand__mark { width: 26px; height: 26px; color: var(--accent); }
.brand__word { font-size: 16px; }

.nav__links {
  display: flex;
  gap: 22px;
  font-size: 15px;
}
.nav__links a {
  color: var(--fg-muted);
  border-bottom: none;
}
.nav__links a:hover { color: var(--fg); }
@media (max-width: 520px) {
  .nav__links { gap: 14px; font-size: 14px; }
  .brand__word { display: none; }
}

/* Hero */
.hero {
  padding: 96px 0 88px;
}
@media (min-width: 900px) {
  .hero { padding: 140px 0 120px; }
}

.eyebrow {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 20px;
}

h1 {
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  font-weight: 600;
  margin: 0 0 24px;
  max-width: 20ch;
}
.accent { color: var(--accent); }

.lede {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--fg-muted);
  max-width: 56ch;
  margin: 0 0 36px;
}

.cta { margin: 0; }
.btn {
  display: inline-block;
  padding: 14px 22px;
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.btn:hover {
  color: var(--accent-ink);
  background: #066461;
  border-color: #066461;
  transform: translateY(-1px);
}

/* Sections */
.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}
.section--alt {
  background: var(--bg-alt);
}
@media (min-width: 900px) {
  .section { padding: 104px 0; }
}

.prose { max-width: var(--prose); }
.prose h2 {
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 24px;
}
.prose p {
  margin: 0 0 20px;
  color: #2d3440;
}
.prose p:last-child { margin-bottom: 0; }
.prose .muted { color: var(--fg-dim); }
.prose .cta { margin-top: 32px; }

/* Long-form legal doc */
.doc { padding: 72px 0 96px; }
.doc h1 {
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1.1;
  margin: 0 0 12px;
  max-width: none;
}
.doc h2 {
  font-size: 22px;
  margin: 36px 0 12px;
  font-weight: 600;
}

/* Footer */
.foot {
  border-top: 1px solid var(--border);
  padding: 28px 0 36px;
  color: var(--fg-dim);
  font-size: 14px;
}
.foot__inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.foot p { margin: 0; }
.foot a {
  color: var(--fg-muted);
  border-bottom: none;
  margin-left: 18px;
}
.foot a:first-of-type { margin-left: 0; }
.foot a:hover { color: var(--fg); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}