/* Four Pilot LLC company site. The Four Pilot Ads design system: near-black ink, greys, one warm accent;
   Archivo for display, Inter for body, JetBrains Mono for eyebrows. Light and dark follow the system. */
@font-face { font-family: 'Archivo'; font-weight: 800; src: url(/fonts/Archivo-800.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'Archivo'; font-weight: 700; src: url(/fonts/Archivo-700.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'Archivo'; font-weight: 600; src: url(/fonts/Archivo-600.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'Inter'; font-weight: 400; src: url(/fonts/Inter-400.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'Inter'; font-weight: 500; src: url(/fonts/Inter-500.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'Inter'; font-weight: 600; src: url(/fonts/Inter-600.ttf) format('truetype'); font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; font-weight: 500; src: url(/fonts/JetBrainsMono-500.ttf) format('truetype'); font-display: swap; }

:root {
  color-scheme: light dark;
  --bg:#FFFFFF; --surface:#F6F6F8; --raised:#FFFFFF; --ink:#0B0B0D; --text:#2A2A30; --muted:#6E6E76; --faint:#A2A2AA;
  --line:#E4E4E9; --line-strong:#C9C9CE; --accent:#F04A00; --accent-soft:#FFEDE4; --on-accent:#FFFFFF; --wordmark-invert:1;
  --display:'Archivo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --body:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono:'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#0B0B0D; --surface:#131316; --raised:#1A1A1F; --ink:#F5F5F7; --text:#D6D6DC; --muted:#8E8E97; --faint:#5C5C66;
          --line:#26262C; --line-strong:#3A3A42; --accent:#FF6A2B; --accent-soft:#2A160D; --on-accent:#0B0B0D; --wordmark-invert:0; }
}
* { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/24px var(--body); letter-spacing: -0.1px; min-height: 100dvh; display: flex; flex-direction: column; }
a { color: inherit; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* Header: the wordmark, the pages, the way in to the service */
.top { position: sticky; top: 0; z-index: 2; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top .wrap { height: 56px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 26px; width: auto; display: block; filter: invert(var(--wordmark-invert)); }
.top nav { display: flex; gap: 20px; margin-left: auto; }
.top nav a { text-decoration: none; color: var(--muted); font: 500 14px/20px var(--body); }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; border-radius: 999px; text-decoration: none; font: 600 15px/20px var(--body); white-space: nowrap; }
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.quiet { color: var(--ink); border: 1px solid var(--line-strong); }
.btn.quiet:hover { background: var(--surface); }
.top .btn { height: 36px; padding: 0 16px; font-size: 14px; }
@media (max-width: 720px) { .top nav { display: none; } }

main { flex: 1; }
.eyebrow { font: 500 11px/14px var(--mono); letter-spacing: 1.4px; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }

/* Front page */
.hero { padding: 88px 0 56px; }
.hero h1 { font: 800 clamp(40px, 6.2vw, 68px)/1.0 var(--display); letter-spacing: -0.03em; color: var(--ink); margin: 0 0 22px; max-width: 14ch; }
.hero .lede { font: 400 clamp(17px, 1.6vw, 20px)/1.5 var(--body); color: var(--muted); margin: 0 0 30px; max-width: 54ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .actions .btn { height: 48px; padding: 0 24px; font-size: 16px; }
.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 8px 0 88px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 22px 22px 24px; }
.tile .k { font: 600 17px/22px var(--display); letter-spacing: -0.2px; color: var(--ink); margin: 0 0 8px; }
.tile p { margin: 0; color: var(--muted); font-size: 15px; line-height: 22px; }
.tile .n { font: 800 28px/32px var(--display); letter-spacing: -0.8px; color: var(--accent); margin: 0 0 10px; }
@media (max-width: 860px) { .tiles { grid-template-columns: 1fr; } .hero { padding: 56px 0 36px; } .tiles { padding-bottom: 56px; } }

.how { padding: 0 24px 96px; }
.doc-inline { max-width: 720px; border-top: 1px solid var(--line); padding-top: 40px; }
.doc-inline h2 { font: 700 clamp(24px, 3vw, 30px)/1.15 var(--display); letter-spacing: -0.02em; color: var(--ink); margin: 0 0 14px; }
.doc-inline p { color: var(--muted); margin: 0; font-size: 16px; line-height: 25px; }
.doc-inline p a { color: var(--ink); text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
.doc-inline p a:hover { text-decoration-color: var(--accent); }
.doc-inline .eyebrow { margin-bottom: 10px; }

/* Document pages */
.doc { max-width: 720px; margin: 0 auto; padding: 64px 24px 88px; }
.doc h1 { font: 800 clamp(32px, 4.5vw, 44px)/1.05 var(--display); letter-spacing: -0.03em; color: var(--ink); margin: 0 0 10px; }
.doc .meta { color: var(--faint); font-size: 14px; line-height: 20px; margin: 0 0 40px; }
.doc h2 { font: 600 19px/24px var(--display); letter-spacing: -0.2px; color: var(--ink); margin: 36px 0 10px; }
.doc p { color: var(--text); margin: 0 0 14px; }
.doc a { color: var(--ink); text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.doc a:hover { text-decoration-color: var(--accent); }
.doc .card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 20px 22px; margin: 24px 0; }
.doc .card p { margin: 0; }
.doc .card p + p { margin-top: 8px; }

/* Footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0 calc(32px + env(safe-area-inset-bottom)); color: var(--faint); font-size: 14px; line-height: 22px; }
.foot .wrap { display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center; }
.foot nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 20px; }
.foot nav a { text-decoration: none; color: var(--muted); }
.foot nav a:hover { color: var(--ink); }
.foot p { margin: 0; }
.foot a { color: inherit; text-decoration: none; }
.foot a:hover { color: var(--ink); }