:root{
    --bg: #F6F3EC;
    --ink: #1D1B18;
    --ink-soft: #55504A;
    --panel: #24211D;
    --square-light: #EDE6D6;
    --square-dark: #2A2723;
    --accent: #7B2D26;
    --accent-soft: #F0DAD6;
    --gold: #A9863E;
    --line: rgba(29,27,24,0.14);
    --radius: 2px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'Inter', sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Fraunces', serif;
    font-weight:600;
    margin:0 0 0.4em 0;
    letter-spacing:-0.01em;
  }
  .mono{
    font-family:'IBM Plex Mono', monospace;
    letter-spacing:0.02em;
  }
  a{color:inherit;}
  .wrap{
    max-width:1120px;
    margin:0 auto;
    padding:0 32px;
  }
  @media (max-width:640px){ .wrap{padding:0 20px;} }

  /* ---------- checker divider ---------- */
  .checker-row{
    height:14px;
    width:100%;
    background-image: linear-gradient(45deg, var(--panel) 25%, transparent 25%, transparent 75%, var(--panel) 75%),
                       linear-gradient(45deg, var(--panel) 25%, transparent 25%, transparent 75%, var(--panel) 75%);
    background-size:14px 14px;
    background-position:0 0, 7px 7px;
    background-color: var(--square-light);
    opacity:0.9;
  }

  /* ---------- nav ---------- */
  header{
    position:sticky; top:0; z-index:20;
    background:var(--bg);
    border-bottom:1px solid var(--line);
  }
  nav.wrap{
    display:flex; align-items:center; justify-content:space-between;
    padding-top:20px; padding-bottom:20px;
  }
  .brand{
    display:flex; align-items:baseline; gap:8px;
    font-family:'Fraunces', serif; font-weight:600; font-size:1.3rem;
  }
  .brand .mark{color:var(--accent); font-size:1.1rem;}
  .navlinks{display:flex; gap:32px; align-items:center; font-size:0.95rem;}
  .navlinks a{text-decoration:none; color:var(--ink-soft); transition:color .15s;}
  .navlinks a:hover{color:var(--ink);}
  .btn{
    display:inline-block;
    padding:11px 22px;
    background:var(--accent);
    color:#fff;
    text-decoration:none;
    border-radius:var(--radius);
    font-size:0.9rem;
    font-weight:500;
    border:1px solid var(--accent);
    transition:background .15s, color .15s;
  }
  .btn:hover{background:transparent; color:var(--accent);}
  .btn.ghost{
    background:transparent; color:var(--ink); border:1px solid var(--ink);
  }
  .btn.ghost:hover{background:var(--ink); color:var(--bg);}
  .navtoggle{display:none; background:none; border:none; font-size:1.5rem; cursor:pointer; color:var(--ink);}

  @media (max-width:800px){
    .navlinks{
      position:absolute; top:100%; left:0; right:0;
      background:var(--bg); border-bottom:1px solid var(--line);
      flex-direction:column; align-items:flex-start; gap:0;
      padding:8px 20px 20px;
      display:none;
    }
    .navlinks.open{display:flex;}
    .navlinks a{padding:12px 0; width:100%; border-bottom:1px solid var(--line);}
    .navtoggle{display:block;}
    nav .btn{display:none;}
  }

  /* ---------- hero ---------- */
  .hero{
    padding:88px 0 96px;
  }
  .hero .wrap{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:56px;
    align-items:center;
  }
  @media (max-width:900px){ .hero{padding:56px 0 64px;} .hero .wrap{grid-template-columns:1fr;} }
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.8rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--accent);
    margin-bottom:18px;
    display:flex; align-items:center; gap:10px;
  }
  .eyebrow::before{content:''; width:20px; height:1px; background:var(--accent); display:inline-block;}
  .hero h1{
    font-size:clamp(2.6rem, 5vw, 4rem);
    line-height:1.02;
    max-width:11ch;
  }
  .hero p.lede{
    font-size:1.15rem;
    color:var(--ink-soft);
    max-width:46ch;
    margin:22px 0 32px;
  }
  .hero-ctas{display:flex; gap:16px; align-items:center; flex-wrap:wrap;}
  .hero-note{font-size:0.85rem; color:var(--ink-soft); margin-top:16px; font-family:'IBM Plex Mono', monospace;}

  /* ---------- board ---------- */
  .board-card{
    background:var(--panel);
    padding:20px;
    border-radius:4px;
    box-shadow:0 30px 60px -25px rgba(0,0,0,0.35);
  }
  .board{
    display:grid;
    grid-template-columns:repeat(8, 1fr);
    grid-template-rows:repeat(8, 1fr);
    aspect-ratio:1/1;
    width:100%;
    border:1px solid var(--panel);
  }
  .sq{
    display:flex; align-items:center; justify-content:center;
    font-size:clamp(1.1rem, 2.6vw, 1.9rem);
    position:relative;
  }
  .sq.light{background:var(--square-light); color:var(--ink);}
  .sq.dark{background:var(--square-dark); color:var(--square-light);}
  .sq .piece.white{color:#F6F3EC; text-shadow:0 0 0 1px var(--ink);}
  .sq .piece.black{color:#1D1B18;}
  .board-caption{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color:var(--square-light);
    text-align:center;
    padding-top:14px;
    letter-spacing:0.04em;
  }

  /* ---------- section shell ---------- */
  section{padding:96px 0;}
  .section-head{
    display:flex; justify-content:space-between; align-items:flex-end;
    gap:24px; margin-bottom:56px; flex-wrap:wrap;
  }
  .section-head .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.8rem;
    color:var(--accent);
    text-transform:uppercase;
    letter-spacing:0.08em;
    margin-bottom:10px;
    display:block;
  }
  .section-head h2{font-size:clamp(1.8rem, 3vw, 2.4rem); max-width:16ch;}
  .section-head .desc{max-width:36ch; color:var(--ink-soft); font-size:0.98rem;}

  /* ---------- programs (phases of a game) ---------- */
  .phases{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:0;
    border:1px solid var(--line);
  }
  @media (max-width:800px){ .phases{grid-template-columns:1fr;} }
  .phase{
    padding:36px 32px;
    border-right:1px solid var(--line);
    position:relative;
  }
  .phase:last-child{border-right:none;}
  @media (max-width:800px){ .phase{border-right:none; border-bottom:1px solid var(--line);} .phase:last-child{border-bottom:none;} }
  .phase .move{
    font-family:'IBM Plex Mono', monospace;
    color:var(--gold);
    font-size:0.85rem;
    margin-bottom:14px;
    display:block;
  }
  .phase h3{font-size:1.3rem; margin-bottom:10px;}
  .phase p{color:var(--ink-soft); font-size:0.95rem; margin-bottom:18px;}
  .phase ul{margin:0; padding-left:18px; color:var(--ink-soft); font-size:0.9rem;}
  .phase li{margin-bottom:6px;}

  /* ---------- tournaments ---------- */
  .tournaments{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
  }
  @media (max-width:800px){ .tournaments{grid-template-columns:1fr;} }
  .tournaments ul{
    list-style:none; margin:24px 0 0; padding:0;
    display:grid; grid-template-columns:1fr 1fr; gap:14px 24px;
  }
  @media (max-width:500px){ .tournaments ul{grid-template-columns:1fr;} }
  .tournaments li{
    font-size:0.95rem; color:var(--ink-soft);
    display:flex; align-items:center; gap:10px;
  }
  .tournaments li::before{
    content:'♞'; color:var(--gold); font-size:1rem; flex-shrink:0;
  }
  .tournament-card{
    background:var(--panel);
    color:var(--bg);
    padding:40px 36px;
    border-radius:4px;
    box-shadow:0 30px 60px -25px rgba(0,0,0,0.35);
  }
  .tournament-card .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color:var(--gold);
    text-transform:uppercase;
    letter-spacing:0.08em;
    display:block;
    margin-bottom:14px;
  }
  .tournament-card h3{
    color:var(--bg); font-size:1.6rem; margin-bottom:14px; max-width:16ch;
  }
  .tournament-card p{
    color:var(--square-light); opacity:0.85; font-size:0.95rem; margin-bottom:0;
  }
  .tournament-card .divider{
    height:1px; background:rgba(246,243,236,0.15); margin:24px 0;
  }
  .tournament-card .tagline{
    font-family:'Fraunces', serif; font-style:italic; font-size:1.1rem; color:var(--bg);
  }

  /* ---------- gallery ---------- */
  .gallery{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:20px;
  }
  @media (max-width:800px){ .gallery{grid-template-columns:repeat(2, 1fr);} }
  @media (max-width:480px){ .gallery{grid-template-columns:1fr;} }
  .gallery-item{
    aspect-ratio:4/3;
    border-radius:4px;
    overflow:hidden;
    background:var(--square-light);
    border:1px solid var(--line);
  }
  .gallery-item img{
    width:100%; height:100%; object-fit:cover; display:block;
  }
  .gallery-item.placeholder{
    display:flex; align-items:center; justify-content:center;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color:var(--ink-soft);
    text-align:center;
    padding:16px;
  }

  /* ---------- coach ---------- */
  .coach{
    display:grid;
    grid-template-columns:0.8fr 1.2fr;
    gap:56px;
    align-items:center;
  }
  @media (max-width:800px){ .coach{grid-template-columns:1fr;} }
  .coach-photo{
    aspect-ratio:4/5;
    background:var(--panel);
    border-radius:4px;
    display:flex; align-items:center; justify-content:center;
    color:var(--square-light);
    font-family:'IBM Plex Mono', monospace;
    font-size:0.85rem;
    text-align:center;
    padding:24px;
  }
  .credentials{
    display:flex; flex-wrap:wrap; gap:10px; margin-top:24px;
  }
  .credential{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    padding:7px 12px;
    border:1px solid var(--line);
    border-radius:20px;
    color:var(--ink-soft);
  }

  /* ---------- testimonials ---------- */
  .testimonials{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:28px;
  }
  @media (max-width:800px){ .testimonials{grid-template-columns:1fr;} }
  .testimonial{
    background:#fff;
    border:1px solid var(--line);
    padding:28px;
    border-radius:4px;
  }
  .testimonial p{font-size:0.98rem; margin:0 0 18px;}
  .testimonial .who{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.8rem;
    color:var(--ink-soft);
  }
  .stars{color:var(--gold); letter-spacing:2px; margin-bottom:14px; font-size:0.9rem;}

  /* ---------- pricing ---------- */
  .pricing{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(230px, 1fr));
    gap:24px;
  }
  .plan{
    border:1px solid var(--line);
    padding:32px;
    border-radius:4px;
    display:flex; flex-direction:column;
  }
  .plan.featured{
    border-color:var(--accent);
    background:var(--accent-soft);
  }
  .plan .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.75rem;
    text-transform:uppercase;
    color:var(--accent);
    margin-bottom:12px;
  }
  .plan .price{
    font-family:'Fraunces', serif;
    font-size:2.4rem;
    font-weight:600;
    margin:6px 0 4px;
  }
  .plan .price span{font-size:0.9rem; font-family:'Inter',sans-serif; color:var(--ink-soft); font-weight:400;}
  .plan .price.sub{font-size:1.3rem; color:var(--ink-soft); margin:0 0 20px;}
  .plan .price.sub span{font-size:0.85rem;}
  .plan ul{padding-left:18px; margin:20px 0 28px; color:var(--ink-soft); font-size:0.92rem; flex-grow:1;}
  .plan li{margin-bottom:8px;}

  /* ---------- cta ---------- */
  .cta-band{
    background:var(--panel);
    color:var(--bg);
    padding:88px 0;
    text-align:center;
  }
  .cta-band h2{color:var(--bg); font-size:clamp(1.9rem,3.5vw,2.6rem); max-width:18ch; margin:0 auto 18px;}
  .cta-band p{color:var(--square-light); opacity:0.75; max-width:40ch; margin:0 auto 32px;}
  .cta-band .btn{background:var(--gold); border-color:var(--gold); color:var(--panel);}
  .cta-band .btn:hover{background:transparent; color:var(--gold);}

  /* ---------- footer ---------- */
  footer{
    padding:48px 0;
    border-top:1px solid var(--line);
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;
  }
  footer .mono{font-size:0.82rem; color:var(--ink-soft);}
  .foot-links{display:flex; gap:24px;}
  .foot-links a{font-size:0.85rem; color:var(--ink-soft); text-decoration:none;}
  .foot-links a:hover{color:var(--ink);}

  ::selection{background:var(--accent); color:#fff;}
  @media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }

/* ---------- nav current page ---------- */
.navlinks a.current{ color:var(--ink); font-weight:600; }

/* ---------- home: quick links grid ---------- */
.quicklinks{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:0;
  border:1px solid var(--line);
}
@media (max-width:800px){ .quicklinks{grid-template-columns:1fr 1fr;} }
@media (max-width:500px){ .quicklinks{grid-template-columns:1fr;} }
.quicklink{
  padding:32px 28px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  text-decoration:none;
  color:var(--ink);
  display:block;
  transition:background .15s;
}
.quicklink:hover{ background:rgba(29,27,24,0.03); }
.quicklink:nth-child(3n){ border-right:none; }
@media (max-width:800px){ .quicklink:nth-child(3n){ border-right:1px solid var(--line); } .quicklink:nth-child(2n){ border-right:none; } }
@media (max-width:500px){ .quicklink{ border-right:none !important; } }
.quicklink .move{
  font-family:'IBM Plex Mono', monospace;
  color:var(--gold);
  font-size:0.78rem;
  text-transform:uppercase;
  letter-spacing:0.06em;
  display:block;
  margin-bottom:12px;
}
.quicklink h3{ font-size:1.15rem; margin-bottom:8px; }
.quicklink p{ color:var(--ink-soft); font-size:0.9rem; margin:0 0 10px; }
.quicklink .arrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.82rem;
  color:var(--accent);
}