:root {
  --bg: #19232d;
  --bg-raised: #28323c;
  --bg-soft: #0f1923;
  --ink: #ffffff;
  --muted: #cdcdcd;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #0d6efd;
  --accent-ink: #ffffff;
  --sans: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 420px at 90% -10%, rgba(13, 110, 253, 0.16), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.6;
}

a { color: inherit; }

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

.wrap {
  width: min(1080px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  padding: 1.25rem 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand img {
  width: min(220px, 68vw);
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a[aria-current="page"] { color: var(--accent); }

.hero-stage {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  margin-bottom: 1.5rem;
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(25, 35, 45, 0.92) 14%, rgba(25, 35, 45, 0.55) 34%, transparent 56%),
    linear-gradient(270deg, var(--bg) 0%, rgba(25, 35, 45, 0.65) 8%, transparent 28%),
    linear-gradient(180deg, rgba(25, 35, 45, 0.82) 0%, transparent 13%, transparent 42%, rgba(25, 35, 45, 0.55) 70%, var(--bg) 92%),
    radial-gradient(72% 78% at 70% 50%, transparent 28%, var(--bg) 88%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  margin-top: auto;
  margin-bottom: 11vh;
}

.hero-text { max-width: 34rem; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 560; letter-spacing: -0.03em; }

h1 {
  margin: 0 0 1rem;
  font-size: clamp(3.2rem, 7vw, 5.6rem);
  line-height: 0.92;
}

.motto {
  margin: -0.35rem 0 1rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 560;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.lede {
  max-width: 38rem;
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.15rem;
}

.card p.card-line {
  margin: 0 0 0.45rem;
  color: var(--accent);
  font-size: 0.95rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

.button.primary { background: var(--accent); color: var(--accent-ink); }
.button.ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(15, 25, 35, 0.45);
}

.chess-stage {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image:
    linear-gradient(90deg, transparent 0%, #000 22%, #000 72%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 10%, #000 58%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(90deg, transparent 0%, #000 22%, #000 72%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 10%, #000 58%, transparent 100%);
  mask-composite: intersect;
}

.chess-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.section { padding: 1rem 0 4rem; }

.section h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.section-intro {
  max-width: 40rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
}

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

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.25rem 1.25rem 1.35rem;
}

.card h3 { margin: 0 0 0.45rem; font-size: 1.45rem; }
.card p { margin: 0; color: var(--muted); }

.card .index {
  display: block;
  margin-bottom: 1.4rem;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.5rem;
  align-items: start;
}

.panel {
  background: var(--bg-soft);
  border-radius: 22px;
  padding: 1.25rem 1.35rem;
}

.panel dt {
  margin-top: 0.9rem;
  font-weight: 650;
}

.panel dt:first-child { margin-top: 0; }

.panel dd {
  margin: 0.15rem 0 0;
  color: var(--muted);
}

.page-hero { padding: 2rem 0 1.5rem; }

.page-hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.6rem);
}

.prose {
  max-width: 46rem;
  padding-bottom: 4rem;
}

.prose h2 {
  margin: 2rem 0 0.5rem;
  font-size: 1.7rem;
}

.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--ink); font-weight: 650; }
.prose ul { padding-left: 1.2rem; }
.prose a { color: var(--accent); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
}

.quiet-lines {
  margin: 0 0 0.85rem;
  max-width: 42rem;
  color: rgba(205, 205, 205, 0.55);
  font-size: 0.78rem;
  line-height: 1.45;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer nav { display: flex; gap: 1rem; }
.site-footer a { color: var(--ink); text-decoration: none; }

@media (max-width: 800px) {
  .grid, .split { grid-template-columns: 1fr; }
  .nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.7rem 1rem;
  }
  .hero-stage {
    min-height: 0;
    display: flex;
    flex-direction: column;
  }
  .hero-stage::before { display: none; }
  .site-header { order: 1; }
  .hero-copy { order: 2; margin: 0.5rem auto 0; }
  .chess-stage {
    order: 3;
    position: relative;
    height: 72vw;
    min-height: 260px;
    margin-top: -0.5rem;
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 72%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 72%, transparent 100%);
  }
}