:root {
  color-scheme: light;
  --bg: #faf9f6;
  --surface: #ffffff;
  --surface-tint: #f3f4f8;
  --ink: #1c1c1e;
  --ink-soft: #6b6b74;
  --ink-faint: #9a9aa2;
  --accent: #3b6ff2;
  --accent-ink: #23459c;
  --accent-soft: #e9eefd;
  --line: #e6e6ea;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --max: 1080px;
  --shadow: 0 1px 2px rgba(28, 28, 30, 0.04), 0 12px 32px -16px rgba(28, 28, 30, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.display {
  font-family: "Space Mono", ui-monospace, Menlo, monospace;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

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

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 249, 246, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
}

.nav-links a:hover { color: var(--ink); }

.nav-links a.current { color: var(--accent-ink); }

.nav-cta {
  background: var(--ink);
  color: #fff;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.nav-cta:hover { background: var(--accent-ink); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--ink);
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; }
  .nav-links .nav-cta { width: auto; margin-top: 8px; }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 88px 0 64px;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 40%, transparent 90%);
  opacity: 0.7;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 56px;
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { order: -1; margin: 0 auto 8px; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Space Mono", monospace;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

h1.display {
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.08;
  font-weight: 700;
  margin: 0 0 20px;
  text-wrap: balance;
}

.hero p.lede {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 30px;
}

@media (max-width: 860px) {
  .hero p.lede { margin-left: auto; margin-right: auto; }
}

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

@media (max-width: 860px) { .btn-row { justify-content: center; } }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

/* ---------- Puzzle tile visual ---------- */

.tile-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 18px;
  width: 280px;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  background: var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.tile-cell {
  aspect-ratio: 1;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: 20px;
  position: relative;
}

.tile-cell.head { background: var(--surface-tint); color: var(--ink-soft); font-size: 16px; }
.tile-cell.blank { background: var(--surface-tint); }
.tile-cell.win { color: var(--accent-ink); }

.tile-cell.win::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2.5px solid var(--accent);
  border-radius: 50%;
}

/* ---------- Sections ---------- */

section { padding: 76px 0; }

.section-head { max-width: 640px; margin: 0 0 44px; }

.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.kicker {
  font-family: "Space Mono", monospace;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 10px;
}

h2.display {
  font-size: clamp(26px, 3.4vw, 36px);
  margin: 0 0 12px;
  text-wrap: balance;
}

.section-head p { color: var(--ink-soft); font-size: 16.5px; margin: 0; }

/* Steps */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 860px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 20px;
}

.step-num {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  font-size: 13px;
  color: var(--accent-ink);
  background: var(--accent-soft);
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.step h3 { font-size: 16.5px; margin: 0 0 6px; }
.step p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* Feature cards */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 860px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 22px;
}

.feature .icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  margin-bottom: 16px;
}

.feature h3 { font-size: 17px; margin: 0 0 8px; }
.feature p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* FAQ */

.faq-list { max-width: 720px; margin: 0 auto; }

details {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: "+";
  font-family: "Space Mono", monospace;
  font-size: 20px;
  color: var(--ink-faint);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

details[open] summary::after { transform: rotate(45deg); color: var(--accent); }

details p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 62ch;
}

/* CTA band */

.cta-band {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
}

.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.7); max-width: 46ch; margin: 0 auto 26px; }
.cta-band .btn-row { justify-content: center; }
.cta-band .btn-primary { background: var(--accent); }
.cta-band .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.25); }
.cta-band .btn-ghost:hover { border-color: #fff; }

/* ---------- Legal / support content pages ---------- */

.doc-hero {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--line);
}

.doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

.doc h2 {
  font-family: "Space Mono", monospace;
  font-size: 20px;
  margin: 42px 0 12px;
}

.doc h2:first-child { margin-top: 0; }

.doc p, .doc li { color: var(--ink-soft); font-size: 15.5px; }

.doc ul { padding-left: 20px; }

.doc .updated {
  font-family: "Space Mono", monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-top: 12px;
}

.contact-card a { color: var(--accent-ink); font-weight: 600; }

.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.contact-method {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.contact-method .method-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  margin-bottom: 6px;
}

.contact-method a { color: var(--accent-ink); font-weight: 600; }

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--ink-soft);
}

.footer-links a:hover { color: var(--ink); }

.footer-copy { font-size: 13.5px; color: var(--ink-faint); }