:root{--ink:#120a07;--mahogany:#3b1a10;--mahog2:#5a2a17;--oxblood:#6e1423;--green:#1f3a2b;--gold:#c9a24a;--gold2:#e6c878;--brass:#b08d3c;--ivory:#efe3c6;--parch:#e8d9b5;--text:#f1e6cc;--muted:#bfae8a;--violet:#6b3fd1}
*{box-sizing:border-box}
html{background:#120a07}
body{margin:0;font-family:'EB Garamond',Georgia,serif;font-size:17px;color:var(--text);min-height:100vh;
 background:
  radial-gradient(ellipse at 50% -10%,rgba(255,176,80,.28),transparent 55%),
  radial-gradient(ellipse at 15% 30%,rgba(255,150,60,.10),transparent 40%),
  repeating-linear-gradient(90deg,rgba(0,0,0,.25) 0 2px,transparent 2px 160px),
  repeating-linear-gradient(92deg,rgba(255,255,255,.015) 0 1px,transparent 1px 7px),
  linear-gradient(180deg,#2a120a,#1a0b06 60%,#120805)}
#smoke{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:1;mix-blend-mode:screen;opacity:.9}
.vignette{position:fixed;inset:0;pointer-events:none;z-index:2;background:radial-gradient(ellipse at center,transparent 45%,rgba(0,0,0,.75) 100%)}
header,main{position:relative;z-index:3}
header{padding:14px 16px 10px;background:linear-gradient(180deg,#24100a,#160a06);border-bottom:3px double var(--brass);box-shadow:0 6px 24px rgba(0,0,0,.6)}
.brand{display:flex;align-items:center;gap:12px;margin-bottom:10px;justify-content:center;text-align:center}
.crest{font-size:30px;color:var(--gold2);width:46px;height:46px;border:2px solid var(--brass);border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#3a1d10,#1a0b06);box-shadow:inset 0 0 8px #000,0 0 14px rgba(230,200,120,.25)}
h1{margin:0;font-family:'UnifrakturMaguntia',serif;font-weight:400;font-size:clamp(24px,5vw,36px);color:var(--gold2);text-shadow:0 0 18px rgba(255,180,80,.35),0 2px 0 #000;letter-spacing:.5px}
.sub{font-family:'Cinzel',serif;font-size:11px;letter-spacing:3px;color:var(--muted);text-transform:uppercase}
nav{display:flex;gap:6px;overflow-x:auto;justify-content:safe center}@media(max-width:500px){nav{justify-content:flex-start}nav button{padding:7px 10px;font-size:12px}}
nav button{font-family:'Cinzel',serif;font-size:13px;letter-spacing:1px;background:linear-gradient(180deg,#3a2a14,#22170a);border:1px solid var(--brass);color:var(--gold2);padding:7px 14px;border-radius:3px;white-space:nowrap;cursor:pointer;box-shadow:inset 0 1px 0 rgba(255,230,160,.25)}
nav button.active{background:linear-gradient(180deg,var(--gold2),var(--brass));color:#2a140a;font-weight:700}
main{max-width:1020px;margin:0 auto;padding:18px 14px 90px}.tab{display:none}.tab.active{display:block}
.card{position:relative;background:linear-gradient(180deg,rgba(70,32,18,.92),rgba(42,18,10,.94));border:1px solid #6b4a22;border-radius:6px;padding:18px;margin-bottom:16px;box-shadow:0 10px 28px rgba(0,0,0,.55),inset 0 0 0 4px rgba(0,0,0,.25),inset 0 0 0 5px rgba(201,162,74,.35)}
.card::before,.card::after{content:'❦';position:absolute;top:6px;font-size:14px;color:var(--brass);opacity:.8}.card::before{left:10px}.card::after{right:10px;transform:scaleX(-1)}
h2{margin:0 0 12px;font-family:'Cinzel',serif;font-size:18px;color:var(--gold2);letter-spacing:.5px;text-align:center;border-bottom:1px solid rgba(201,162,74,.35);padding-bottom:8px}
h3{font-family:'Cinzel',serif;color:var(--gold2)}
label{display:block;margin-bottom:12px;font-size:15px;color:var(--muted);font-family:'Cinzel',serif;letter-spacing:.5px}
input,select{display:block;width:100%;margin-top:5px;padding:10px;border-radius:3px;border:1px solid var(--brass);background:#1b0e08;color:var(--ivory);font-size:16px;font-family:'EB Garamond',serif}
button{font-family:'EB Garamond',serif}
button.primary{background:linear-gradient(180deg,#e6c878,#b08d3c 60%,#8a6a28);color:#2a140a;border:1px solid #6b4a1a;padding:10px 18px;border-radius:3px;font-size:16px;cursor:pointer;font-weight:600;box-shadow:inset 0 1px 0 #fff3c4,0 3px 8px rgba(0,0,0,.5)}
button.ghost{background:rgba(0,0,0,.25);border:1px solid var(--brass);color:var(--gold2);padding:9px 14px;border-radius:3px;cursor:pointer;font-size:15px}
button:disabled{opacity:.6}.muted{color:var(--muted);font-size:15px}
a{color:var(--gold2)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}
.stat{text-align:center;padding:14px 10px;border-radius:4px;background:linear-gradient(180deg,#d9b866,#a5823a 55%,#7d5f24);color:#2a140a;border:1px solid #5e451a;box-shadow:inset 0 1px 0 #fff0c0,inset 0 -2px 4px rgba(0,0,0,.35),0 6px 14px rgba(0,0,0,.5)}
.stat b{display:block;font-family:'Cinzel',serif;font-size:26px;text-shadow:0 1px 0 rgba(255,240,190,.6)}.stat span{font-size:13px;font-weight:600}
.progress{height:16px;background:#1a0d07;border:1px solid var(--brass);border-radius:2px;overflow:hidden}.progress div{height:100%;background:repeating-linear-gradient(45deg,#c9a24a 0 10px,#b08d3c 10px 20px)}
svg.chart{width:100%;height:170px;background:rgba(0,0,0,.25);border:1px solid rgba(201,162,74,.25)}
.drill{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px}@media(max-width:800px){.drill{grid-template-columns:1fr}}
.table{padding:18px;border-radius:8px;background:
 radial-gradient(ellipse at 30% 20%,rgba(255,190,110,.18),transparent 60%),
 repeating-linear-gradient(88deg,rgba(0,0,0,.18) 0 3px,transparent 3px 22px),
 linear-gradient(135deg,#4a2414,#2b1209);box-shadow:inset 0 0 40px rgba(0,0,0,.7),0 14px 30px rgba(0,0,0,.6);border:2px solid #1c0b05}
.boardwrap{width:100%;max-width:560px;aspect-ratio:1;margin:0 auto;padding:12px;background:linear-gradient(135deg,#6a3a1c,#3a1c0c);border:3px solid var(--brass);box-shadow:0 0 0 2px #1c0b05,0 10px 26px rgba(0,0,0,.7),inset 0 0 10px rgba(0,0,0,.6)}
.cg-wrap{width:100%;height:100%}
cg-board{background-color:#e6d3a8;background-image:
 conic-gradient(#6b3a1f 90deg,transparent 90deg 180deg,#6b3a1f 180deg 270deg,transparent 270deg),
 repeating-linear-gradient(80deg,rgba(90,50,20,.08) 0 2px,transparent 2px 9px);
 background-size:25% 25%,100% 100%;background-position:0 0,0 0}
cg-board::after{content:'';position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 30% 25%,rgba(255,200,120,.18),transparent 60%),radial-gradient(ellipse at center,transparent 60%,rgba(0,0,0,.25))}
cg-board square.last-move{background-color:rgba(201,162,74,.45)}cg-board square.selected{background-color:rgba(110,20,35,.45)}
cg-board square.move-dest{background:radial-gradient(rgba(31,58,43,.6) 20%,transparent 22%)}cg-board square.oc.move-dest{background:radial-gradient(transparent 0%,transparent 80%,rgba(31,58,43,.5) 80%)}
cg-board square.check{background:radial-gradient(ellipse at center,rgba(200,0,0,.9) 0%,rgba(110,20,35,.4) 40%,transparent 70%)}
.cg-wrap coords{font-family:'Cinzel',serif;font-weight:700;color:#3a1c0c}
.cg-wrap coords.ranks coord:nth-child(odd),.cg-wrap coords.files coord:nth-child(odd){color:#efe3c6}
piece{filter:drop-shadow(0 3px 2px rgba(0,0,0,.45))}
.cg-wrap piece.pawn.white{background-image:url(/piece/wP.svg)}.cg-wrap piece.knight.white{background-image:url(/piece/wN.svg)}.cg-wrap piece.bishop.white{background-image:url(/piece/wB.svg)}.cg-wrap piece.rook.white{background-image:url(/piece/wR.svg)}.cg-wrap piece.queen.white{background-image:url(/piece/wQ.svg)}.cg-wrap piece.king.white{background-image:url(/piece/wK.svg)}
.cg-wrap piece.pawn.black{background-image:url(/piece/bP.svg)}.cg-wrap piece.knight.black{background-image:url(/piece/bN.svg)}.cg-wrap piece.bishop.black{background-image:url(/piece/bB.svg)}.cg-wrap piece.rook.black{background-image:url(/piece/bR.svg)}.cg-wrap piece.queen.black{background-image:url(/piece/bQ.svg)}.cg-wrap piece.king.black{background-image:url(/piece/bK.svg)}
.feedback{padding:11px 13px;border-radius:3px;margin:10px 0;font-size:16px;border-left:4px solid}
.ok{background:rgba(31,58,43,.85);border-color:#6fae7d}.bad{background:rgba(110,20,35,.8);border-color:#d0606e}.info{background:rgba(20,12,8,.7);border-color:var(--brass)}
.tag{display:inline-block;font-size:12px;padding:3px 9px;border-radius:2px;background:#1f3a2b;color:var(--ivory);border:1px solid #3d6b4f;margin:2px;font-family:'Cinzel',serif;letter-spacing:.3px}.tag.red{background:var(--oxblood);border-color:#a33}
.pat{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed rgba(201,162,74,.3)}.pat:last-child{border:0}
.barh{height:8px;background:linear-gradient(90deg,var(--oxblood),#a8323f);border-radius:1px;margin-top:5px}
.status{position:fixed;left:0;right:0;bottom:0;z-index:4;background:#1a0b06;border-top:2px solid var(--brass);padding:10px 16px;font-size:15px}
.status .bar{height:5px;background:#000;margin-bottom:6px}#statusfill{height:100%;background:var(--gold);width:0}
.hidden{display:none}.btnrow button{margin:4px 6px 4px 0}
.steps{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:12px;justify-content:center}.steps span{font-family:'Cinzel',serif;font-size:11px;padding:4px 7px;border:1px solid rgba(201,162,74,.4);color:var(--muted);border-radius:2px}.steps span.on{background:var(--brass);color:#2a140a;font-weight:700}
.q{font-size:18px;font-style:italic}
.opts{display:grid;gap:8px}.opt{text-align:left;background:rgba(0,0,0,.3);color:var(--ivory);border:1px solid var(--brass);padding:10px 12px;border-radius:3px;font-size:16px;cursor:pointer}.opt.right{background:rgba(31,58,43,.9);border-color:#6fae7d}.opt.wrong{background:rgba(110,20,35,.9)}
ol.check{padding-left:22px}ol.check li{padding:8px 10px;margin-bottom:6px;border:1px solid transparent;cursor:pointer;border-radius:3px}ol.check li.on{background:rgba(201,162,74,.15);border-color:var(--brass)}
.coach{line-height:1.55;font-size:16.5px;background:linear-gradient(180deg,#efe3c6,#e2d0a6);color:#2a1a0e;padding:14px 16px;border-radius:2px;box-shadow:inset 0 0 30px rgba(120,80,30,.35);margin:10px 0}
.coach b{color:#5a1420}.coach .muted{color:#5b4630}
.plaque{font-family:'Cinzel',serif;text-align:center;font-size:15px;padding:10px;margin:10px 0;color:#2a140a;background:linear-gradient(180deg,#e6c878,#b08d3c 60%,#8a6a28);border:1px solid #5e451a;border-radius:3px;box-shadow:inset 0 1px 0 #fff3c4}
@media(max-width:500px){body{font-size:16px}.card{padding:14px}.table{padding:8px}.boardwrap{padding:6px}}