:root {
  color-scheme: light;
  --ink: #1d1d1f;
  --muted: #424245;
  --line: #d2d2d7;
  --soft: #f5f5f7;
  --paper: #ffffff;
  --blue: #0071e3;
  --blue-dark: #0066cc;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: -0.018em;
}

a { color: inherit; }

.site-header,
.site-footer,
main { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 760; letter-spacing: -0.04em; text-decoration: none; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 17px;
  border: 1px solid var(--blue);
  border-radius: 980px;
  background: var(--blue);
  color: #ffffff;
  font-size: 0.96rem;
  font-weight: 720;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.button:hover,
.button:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

.button-secondary { background: #ffffff; color: var(--blue); }

.button-secondary:hover { color: #ffffff; }

.hero { max-width: 910px; padding: 44px 0 36px; }

.hero.compact { max-width: 800px; padding: 40px 0 32px; }

.eyebrow {
  margin: 0 0 14px;
  color: #6e6e73;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 940px;
  margin-bottom: 16px;
  font-size: clamp(2.5rem, 3.8vw, 4.25rem);
  line-height: 0.98;
  letter-spacing: -0.075em;
}

h2 { max-width: 740px; margin-bottom: 12px; font-size: clamp(1.65rem, 2.5vw, 2.5rem); line-height: 1.05; letter-spacing: -0.055em; }

h3 { margin-bottom: 7px; font-size: 1.2rem; letter-spacing: -0.04em; }

p { color: var(--muted); font-size: 0.94rem; line-height: 1.48; }

.lead { max-width: 670px; font-size: clamp(1.05rem, 1.5vw, 1.2rem); line-height: 1.4; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

.section { padding: 44px 0; border-top: 1px solid var(--line); }

.section-heading { max-width: 760px; margin-bottom: 22px; }

.card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }

.card { min-height: 172px; display: flex; flex-direction: column; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: #ffffff; }

.card p:not(.eyebrow):not(.status) { flex: 1; }

.status,
.availability { width: fit-content; margin-top: 16px; margin-bottom: 0; padding: 5px 9px; border: 1px solid var(--line); border-radius: 980px; color: var(--muted); font-size: 0.75rem; font-weight: 700; }

.text-link { color: var(--blue); font-size: 0.96rem; font-weight: 750; text-decoration: none; }

.text-link:hover { color: var(--blue-dark); text-decoration: underline; text-underline-offset: 4px; }

.mobile-band { padding-bottom: 64px; }

.app-callout { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: var(--soft); }

.app-callout h2 { font-size: clamp(1.9rem, 3vw, 2.8rem); }

.paper { max-width: 850px; padding-bottom: 64px; }

.paper h3 { margin-top: 36px; }

.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; border-top: 1px solid var(--line); }

.site-footer p,
.site-footer a { margin: 0; color: #6e6e73; font-size: 0.86rem; text-decoration: none; }

@media (max-width: 780px) {
  .site-header { min-height: auto; padding: 18px 0; align-items: flex-start; }
  nav { align-items: flex-end; gap: 10px; flex-direction: column; }
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .app-callout,
  .site-footer { align-items: flex-start; flex-direction: column; }
  h1 { font-size: clamp(2.4rem, 10vw, 3.8rem); }
}

@media (max-width: 540px) {
  .card-grid { grid-template-columns: 1fr; }
}