:root {
  --ink: #0b1d31;
  --muted: #52636c;
  --paper: #fbfaf7;
  --panel: #f7f8f8;
  --line: #d8dfe1;
  --teal: #62877a;
  --teal-dark: #52746c;
  --coral: #9c3d3d;
  --gold: #c6a15b;
  --cyan: #7bc4d5;
  --shadow: 0 20px 55px rgba(13,27,42,.12);
  font-family: "Sora", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); line-height: 1.6; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; }
.skip-link { position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: white; padding: .65rem 1rem; z-index: 10; }
.skip-link:focus { top: 1rem; }
.container { width: min(1120px, calc(100% - 3rem)); margin: 0 auto; }
.site-header { border-bottom: 1px solid rgba(216,223,225,.9); background: rgba(251,250,247,.94); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 5; }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; font-weight: 800; letter-spacing: -.04em; font-size: 1.2rem; }
.mark { width: 30px; height: 30px; background: url('/assets/gridlens-mark.png') center/contain no-repeat; display: inline-block; }
.nav-links { display: flex; align-items: center; gap: 1.5rem; font-size: .92rem; color: var(--muted); }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; border-radius: 7px; background: var(--teal); color: #fbfaf7; padding: .8rem 1.2rem; text-decoration: none; font-weight: 700; border: 1px solid var(--teal); transition: transform .2s ease, background .2s ease; }
.button:hover { background: var(--teal-dark); transform: translateY(-2px); }
.button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }
.button.secondary:hover { background: var(--panel); }
.mobile-toggle { display: none; background: transparent; border: 0; font: inherit; font-weight: 700; color: var(--ink); }
.hero { padding: 7.5rem 0 6rem; background: radial-gradient(circle at 83% 20%, rgba(98,135,122,.18), transparent 26rem), linear-gradient(135deg, #fbfaf7 0%, #eef2f2 100%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 5rem; align-items: center; }
.eyebrow { color: var(--teal); text-transform: uppercase; letter-spacing: .14em; font-weight: 800; font-size: .75rem; margin: 0 0 1.1rem; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.045em; margin: 0 0 1rem; }
h1 { font-size: clamp(3.2rem, 7vw, 6.4rem); max-width: 760px; }
h2 { font-size: clamp(2.2rem, 4vw, 4rem); }
h3 { font-size: 1.35rem; }
.lede { color: var(--muted); font-size: 1.18rem; max-width: 590px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.signal-card { background: var(--carbon, #1a2025); color: #f7f8f4; border: 1px solid var(--line); border-radius: 10px; padding: 2rem; box-shadow: var(--shadow); transform: rotate(2deg); }
.signal-card .card-top { display: flex; justify-content: space-between; color: #9ab4b0; font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; }
.signal-card h2 { font-size: 2.1rem; margin: 3.5rem 0 2rem; color: white; }
.signal-line { height: 1px; background: #315155; margin: 1.5rem 0; }
.signal-meta { display: flex; justify-content: space-between; gap: 1rem; color: #b4c8c2; font-size: .9rem; }
.dot { width: 8px; height: 8px; background: var(--gold); border-radius: 50%; display: inline-block; margin-right: .35rem; }
.section { padding: 6.5rem 0; }
.section.tinted { background: #eef2f2; }
.intro { max-width: 660px; margin-bottom: 3rem; }
.kicker { color: var(--coral); font-weight: 800; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 1.5rem; }
.card p { color: var(--muted); margin-bottom: 0; }
.number { color: var(--coral); font-weight: 800; font-size: .85rem; margin-bottom: 3rem; display: block; }
.loop { display: grid; grid-template-columns: repeat(5, 1fr); gap: .7rem; }
.loop .card { min-height: 190px; }
.loop .card h3 { font-size: 1.1rem; }
.loop .card:nth-child(2) { transform: translateY(1rem); }
.loop .card:nth-child(3) { transform: translateY(2rem); }
.loop .card:nth-child(4) { transform: translateY(1rem); }
.callout { background: var(--teal); color: #fbfaf7; border-radius: 10px; padding: 3rem; display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.callout h2 { max-width: 650px; }
.callout .button { background: #0d1b2a; color: #fbfaf7; border-color: #0d1b2a; }
.page-hero { padding: 6rem 0 4rem; background: #eef2f2; }
.page-hero h1 { font-size: clamp(3rem, 7vw, 5.5rem); max-width: 850px; }
.prose { max-width: 760px; }
.prose h2 { font-size: 2rem; margin-top: 3rem; }
.prose h3 { margin-top: 2rem; }
.prose p, .prose li { color: var(--muted); }
.prose li { margin: .4rem 0; }
footer { padding: 2.5rem 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.footer-row { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.footer-links { display: flex; gap: 1rem; }
.note { border-left: 3px solid var(--gold); padding: .5rem 0 .5rem 1rem; }
@media (max-width: 800px) {
  .container { width: min(100% - 2rem, 680px); }
  .hero { padding: 5rem 0 4rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .signal-card { transform: none; }
  .grid-3, .grid-4, .loop { grid-template-columns: 1fr; }
  .loop .card:nth-child(n) { transform: none; }
  .callout, .footer-row { align-items: flex-start; flex-direction: column; }
  .nav-links { display: none; position: absolute; left: 1rem; right: 1rem; top: 68px; padding: 1rem; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .nav-links.is-open { display: flex; }
  .mobile-toggle { display: block; }
  .nav-links .button { text-align: center; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }