:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --hairline: #d2d2d7;
  --bg: #ffffff;
  --tint: #f5f5f7;
  --accent: #0066cc;
  --accent-hover: #0077ed;
  --max: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "Inter", "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 56px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.5;
  letter-spacing: -0.011em;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { color: var(--ink); margin: 0; font-weight: 600; }
h1 {
  font-size: clamp(2.75rem, 7.5vw, 5.5rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
}
h2 {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  line-height: 1.07;
  letter-spacing: -0.03em;
  font-weight: 700;
  max-width: 18ch;
}
h3 { font-size: 1.3125rem; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 0.5rem; }
p { margin: 0; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }
.container.narrow { max-width: 820px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: 0.5rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

.muted { color: var(--muted); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 52px; }
.brand { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 600; font-size: 1.1875rem; letter-spacing: -0.02em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.nav-list { display: flex; align-items: center; gap: 2rem; list-style: none; margin: 0; padding: 0; }
.nav-list a:not(.btn) { color: var(--ink); opacity: 0.8; font-size: 0.8125rem; }
.nav-list a:not(.btn):hover { opacity: 1; text-decoration: none; }

@media (max-width: 720px) {
  .nav-list li:not(:last-child) { display: none; }
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 400;
  padding: 0.75rem 1.5rem;
  border-radius: 980px;
  transition: background 0.2s ease;
}
.btn:hover, .btn:focus-visible { background: var(--accent-hover); text-decoration: none; }
.btn-small { padding: 0.3rem 0.85rem; font-size: 0.8125rem; }

.link-arrow { font-size: 1.0625rem; }
.link-arrow::after { content: " ›"; }

/* Sections */
section { padding: clamp(5rem, 11vw, 9rem) 0; }
section.tint { background: var(--tint); }

.kicker { font-size: 1.3125rem; font-weight: 600; letter-spacing: -0.02em; color: var(--muted); margin-bottom: 0.75rem; }
.section-lede { font-size: clamp(1.25rem, 2.2vw, 1.75rem); line-height: 1.3; letter-spacing: -0.02em; color: var(--muted); margin-top: 1.25rem; max-width: 36ch; }

/* Hero */
.hero { text-align: center; padding-top: clamp(4rem, 9vw, 7rem); }
.hero h1 { max-width: 15ch; margin: 0 auto; }
.hero-mark { display: block; width: clamp(104px, 14vw, 160px); margin: 0 auto 1.75rem; }
.eyebrow { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 0.75rem; }
.lede { font-size: clamp(1.25rem, 2.4vw, 1.75rem); line-height: 1.3; letter-spacing: -0.02em; color: var(--muted); max-width: 32ch; margin: 1.5rem auto 0; }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 1rem 2rem; margin-top: 2.5rem; }

/* About statement */
.statement { padding-top: 0; }
.statement p { font-size: clamp(1.5rem, 3vw, 2.25rem); line-height: 1.25; letter-spacing: -0.025em; font-weight: 600; }

/* Grids */
.grid { display: grid; gap: 2.5rem 3rem; margin-top: clamp(3rem, 6vw, 4.5rem); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid p, .steps p, .tile p { color: var(--muted); }

/* Steps */
.steps {
  list-style: none; counter-reset: step; padding: 0;
  margin: clamp(3rem, 6vw, 4.5rem) 0 0;
  display: grid; gap: 2.5rem 3rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.steps li { counter-increment: step; border-top: 1px solid var(--hairline); padding-top: 1.5rem; }
.steps li::before {
  content: counter(step);
  display: block;
  font-size: clamp(3.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}

/* Product */
.forms {
  list-style: none; padding: 0; margin: clamp(3rem, 6vw, 4.5rem) 0 0;
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.forms li { background: var(--bg); border-radius: 18px; padding: 2rem 1.75rem; }
.form-id { display: block; font-size: clamp(2.5rem, 4.5vw, 3.5rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1; }
.form-name { display: block; margin-top: 0.75rem; color: var(--muted); }
.tiles { gap: 1rem; margin-top: 1rem; }
.tile { background: var(--bg); border-radius: 18px; padding: 2rem 1.75rem; }
.coming-soon { margin-top: 2.5rem; color: var(--muted); max-width: 60ch; }
.coming-soon strong { color: var(--ink); font-weight: 600; }

/* Pilot */
.pilot { text-align: center; }
.pilot img { display: block; margin: 0 auto 1.5rem; }
.pilot h2 { margin: 0 auto; }
.pilot .section-lede { margin-left: auto; margin-right: auto; }
.trust { margin-top: 2.5rem; font-size: 0.9375rem; color: var(--muted); }

/* FAQ */
.faq { margin-top: clamp(2.5rem, 5vw, 3.5rem); border-top: 1px solid var(--hairline); }
.faq details { border-bottom: 1px solid var(--hairline); }
.faq summary { cursor: pointer; padding: 1.5rem 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.75rem; font-weight: 300; line-height: 1; color: var(--muted); }
.faq details[open] summary::after { content: "−"; }
.faq summary h3 { margin: 0; font-size: 1.3125rem; }
.faq details p { margin: 0 0 1.75rem; color: var(--muted); max-width: 62ch; }

/* Footer */
.site-footer { background: var(--tint); border-top: 1px solid var(--hairline); color: var(--muted); padding: 2rem 0 2.5rem; font-size: 0.8125rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; align-items: center; }
.brand-small { font-size: 0.9375rem; }
.disclaimer { flex-basis: 100%; padding-top: 1rem; border-top: 1px solid var(--hairline); }

/* 404 */
.notfound { text-align: center; }
.notfound p { margin-top: 1.25rem; color: var(--muted); font-size: 1.3125rem; }

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