:root {

  --bg: #0a0a0a;
  --surface: #121212;
  --surface-2: #1a1a1a;
  --line: #2a2a2a;
  --ink: #ffffff;
  --ink-muted: #b3b3b3;
  --accent: #3b63fb;
  --accent-ink: #ffffff;
  --sq-light: #dee1e6;
  --sq-dark: #8b939c;
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 720px; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
p { margin: 0 0 1em; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.wordmark {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.25rem; color: var(--ink);
}
.wordmark:hover { text-decoration: none; }
.wordmark img { display: block; }
.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a { color: var(--ink-muted); font-weight: 500; }
.site-nav a:hover { color: var(--ink); text-decoration: none; }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; transition: filter .15s ease;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-small { padding: 8px 16px; border-radius: 8px; }
.site-nav .btn-primary, .site-nav .btn-primary:hover { color: var(--accent-ink); }

.hero { padding: 72px 0 56px; }
.hero-row {
  display: grid; grid-template-columns: 1.1fr .9fr;
  gap: 48px; align-items: center;
}
.lead { font-size: 1.15rem; color: var(--ink-muted); max-width: 44ch; }
.hero-ctas { display: flex; gap: 14px; margin: 24px 0; flex-wrap: wrap; }

.board {
  display: grid; grid-template-columns: repeat(8, 1fr);
  aspect-ratio: 1; width: 100%; max-width: 440px; margin: 0 auto;
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 24px 60px rgb(0 0 0 / .45);
}
.sq { position: relative; }
.sq-l { background: var(--sq-light); }
.sq-d { background: var(--sq-dark); }
.sq img { position: absolute; inset: 4%; width: 92%; height: 92%; }

.features { padding: 64px 0; border-top: 1px solid var(--line); }
.feature-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin-top: 28px;
}
.feature-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px;
}
.feature-card h3 { font-size: 1.1rem; margin: 10px 0 6px; }
.feature-card p { color: var(--ink-muted); margin: 0; font-size: .95rem; }
.feature-icon { font-size: 1.6rem; }

.indir { padding: 64px 0 80px; border-top: 1px solid var(--line); }
.indir .note { color: var(--ink-muted); font-size: .92rem; margin-top: 18px; }

.site-footer {
  border-top: 1px solid var(--line); padding: 40px 0 24px;
  background: var(--surface);
}
.footer-row {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.footer-logo { display: block; }
.footer-brand p { color: var(--ink-muted); margin: 10px 0 0; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-links a { color: var(--ink-muted); }
.footer-links a:hover { color: var(--ink); }
.footer-note { margin-top: 22px; }
.footer-note p { color: var(--ink-muted); font-size: .85rem; margin: 0; }

@media (max-width: 860px) {
  .hero { padding: 40px 0 32px; }
  .hero-row { grid-template-columns: 1fr; gap: 32px; }
  .hero-board { order: -1; }
  .board { max-width: 340px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .site-nav { gap: 14px; }
  .site-nav a:not(.btn) { display: none; }
}
@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
}