:root {
  --bg: #FAF8F5;
  --bg-alt: #F0EDE8;
  --fg: #2C2A26;
  --fg-muted: #7A756D;
  --accent: #8B6914;
  --accent-light: #C9A84C;
  --board-light: #E8D5B5;
  --board-dark: #B58863;
  --card-bg: #FFFFFF;
  --card-border: #E6E1DA;
  --serif: 'Newsreader', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* --- Section Label --- */
.section-label {
  display: inline-block;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* --- Hero --- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 6rem 2rem 5rem;
}

.hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-light);
  padding: 0.3em 0.8em;
  border-radius: 3px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.hero .lede {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* Chessboard decoration */
.hero-board {
  display: flex;
  justify-content: center;
  align-items: center;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: 280px;
  height: 280px;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(44, 42, 38, 0.12), 0 4px 16px rgba(44, 42, 38, 0.06);
  transform: rotate(-4deg);
}

.sq { aspect-ratio: 1; }
.sq.light { background: var(--board-light); }
.sq.dark { background: var(--board-dark); }

/* --- Philosophy --- */
.philosophy {
  background: var(--bg-alt);
  padding: 5rem 2rem;
}

.philosophy-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.philosophy blockquote {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 300;
  font-style: italic;
  color: var(--fg);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.philosophy p {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* --- Features --- */
.features {
  padding: 5rem 2rem;
}

.features-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 2rem;
  transition: box-shadow 0.2s ease;
}

.feature-card:hover {
  box-shadow: 0 8px 24px rgba(44, 42, 38, 0.08);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.feature-card h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* --- Metrics --- */
.metrics {
  background: var(--fg);
  color: var(--bg);
  padding: 5rem 2rem;
}

.metrics-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.metrics .section-label {
  color: var(--accent-light);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}

.metric-value {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 0.3rem;
}

.metric-label {
  font-size: 0.85rem;
  color: rgba(250, 248, 245, 0.6);
}

/* --- Closing --- */
.closing {
  padding: 6rem 2rem;
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 1.2rem;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 2rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1rem;
}

.footer-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

.footer-note a {
  color: var(--accent);
  text-decoration: none;
}

.footer-note a:hover {
  text-decoration: underline;
}

/* --- Mobile --- */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 4rem 1.5rem 3rem;
    text-align: center;
  }

  .hero .lede {
    max-width: 100%;
  }

  .hero-board { order: -1; }

  .board-grid {
    width: 200px;
    height: 200px;
    transform: rotate(-2deg);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

  .philosophy, .features, .metrics, .closing {
    padding: 3.5rem 1.5rem;
  }
}

@media (max-width: 420px) {
  .metrics-grid {
    grid-template-columns: 1fr 1fr;
  }

  .board-grid {
    width: 160px;
    height: 160px;
  }
}